Prepare for better device categorization by moving everything to testing
subdir first.

[skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR
				depends on this MR

Related: postmarketos#16

- 90-android.rules -> 90-android-touch-dev.rules
- reduce_lzo_compression.patch -> 02_reduce_lzo_compression.patch
- mdss_fb_refresh_rate.patch -> 02_mdss_fb_refresh_rate.patch
- aeea3592a13bf12861943e44fc48f1f270941f8d.patch -> 00_fix_return_address.patch
- gpu-msm-fix-gcc5-compile.patch -> 02_gpu-msm-fix-gcc5-compile.patch
- udev-hack.sh -> udev-v4l-hack.sh
- Separate udev-v4l-hack.sh from profile.sh

Migration guide:
https://github.com/postmarketOS/pmbootstrap/wiki/Migration-to-aports-subfolders

This PR automatically creates the weston.ini in the
postmarketos-base post-install script based on options set in the
deviceinfo file for a particular device. This replaces #191.
If weston.ini exists, then no modifications are made.

(Optional) options supported in this PR for deviceinfo are:
deviceinfo_weston_core_modules - defaults to NONE if none specified
deviceinfo_weston_core_backend - defaults to 'fbdev-backend.so' if none specified
deviceinfo_weston_keymap_rules - keymap rule, found under /usr/share/X11/xkb/rules/
deviceinfo_weston_keymap_model - keymap model

Later, the aports folder will probably get split up in its own repository.
But right now this is simply convenient.