Some kernels have a different `KBUILD_OUTPUT` path (e.g. #1551). When
the output path is different from `$srcdir/build`, then
`pmbootstrap kconfig edit` will not work (same with the previous
`pmbootstrap menuconfig` implementation).

This commit forces the output path to be `$srcdir/build` in the template
for new kernel aports, so we won't have that issue with future ports.

Both Mesa and libdrm are now newer in Alpine's repos than in ours,
so we can safely remove these again.

It is important, that we have DEVTMPFS enabled in the kernel config. But
it  does not hurt to have DEVTMPFS_MOUNT enabled as well, and some of
Alpine's kernel configs have that by default. This commit removes the
check that forbids the option in kernel configs, so we can fork the
raspberry pi kernel package from Alpine without changing unrelated
options.

* change "pmbootstrap kconfig_check" to "pmbootstrap kconfig check"
* change "pmbootstrap menuconfig" to "pmbootstrap kconfig edit [-x|-g]"
  (with legacy alias, because the first syntax was referenced to a lot)
* enable X11 interfaces: -x: xconfig, -g: gconfig
* new function to copy the xauthority file:
  pmb.chroot.other.copy_xauthority()
* remove menufconfig() function from the kernel template and all kernel
  aports ([skip ci] because it would rebuild all kernels and run out of
  time). Alpine has dropped this as well, and it wouldn't work with the
  new code anyway.

* add missing dependencies bluez (which provide bluetooth)
* update rpi bluetooth firmware to lateset
* fix install openrc init name (since the package rename to
  firmware-pi-bluetooth, so the previous $pkgname need to change to
  pi-bluetooth)

The package starts with "linux-", which means the "native" cross
compilation type is used:
https://wiki.postmarketos.org/wiki/Build_internals#Cross-compile_types

When using that, !tracedeps needs to be in the options, otherwise the
dependency tracing step fails the build. I've tested that this commit
fixes the build.

Fixes #1546

Adds support for latest raspberry pi 3B+.

This was forked from Alpine, but it's no longer necessary.

Close #1530

Disable checks for good.
* half of them would not run anyway because they require X11
* falkon-cookietest hangs for more than 30 minutes with 100% CPU usage
  while cross compiling for armhf

We already have it limited by the ID_PART_ENTRY_NAME, it is very less
likely that someone will have sdcard with the partition names which are
similar to modem partition.

This fixes rmtfs for @MartijnBraam who for some reason have internal mmc
as mmcblk1 and not 0.

Plasma Mobile uses the telepathy-ofono through telepathy,
telepathy-ofono was developed by canonical for ubuntu touch and it is
also used by dialer-app of ubports.

telepathy-ofono is alternative to telepathy-ring.

This is basically too old stuff from meego times, and is added only
because telepathy-ofono needs it for now, I will talk with ubports
people to get telepathy-ofono ported to libqofono so we can dump this 6
year old unmaintained library.

(patches to make it build with qt5 and modern compiler are taken from
ubuntu packaging)

This is used by the telepathy-ofono/telepathy-ring to provide the
telepathy account which is in turn used by plasma mobile dialer to do
telephony.

libphonenumber is used by the telepathy-ofono, it is library by Google
to parse, format and validate international phone number

This patchset is based on the branch on the sysmocom.de git,

https://git.sysmocom.de/ofono/log/?h=lynxis/voicecall

The original branch was based on old ofono so this patches are manually
merged to ofono 1.21 and tested on debian initially.

This makes the flasher work when no flash_method attribute exists on
the args variable, which happens when it is invoked through the
pmbootstrap export --odin command. This is a regression introduced
in b29cc877

This fixes #1527

As documented here:
https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Trend_lite_(s7390g)

This might be set on other devices as well. This patch also bumps
postmarketos-mkinitfs one minor version.

* linux-samsung-p4wifi: Use libressl-dev
* linux-samsung-p4wifi: Update to kernel based on mainline tegra_defconfig

Previously it was based on the config from a mainline-ish kernel for
Android. The remaining Android specific patches have been dropped.
It is now mainline with out-of-tree drivers and corresponding hardware
specific patches/fixes/hacks.

* add some plugins for postmarketos-ui-xfce4
* make start_xfce4.sh start xfce4 properly and add related dependencies