device-samsung-loganrelte, linux-samsung-loganrelte: initial port

I've ported pmOS to the Galaxy Ace 3 LTE (device-samsung-loganrelte).

What works:
Flashing with heimdall and a SD card
Networking over USB
SSH over USB
Splash screen (when booting from charging screen)

What doesn't work:
Any other UI than "none" (they boot, but no graphics and no SSH)

Steps to flash:

pmbootstrap init
# Select samsung-loganrelte, select "none" as UI
pmbootstrap build linux-samsung-loganrelte
pmbootstrap build device-samsung-loganrelte
pmbootstrap install --sdcard=/dev/sdX # doesn't boot from internal storage
pmbootstrap flasher flash_kernel