meta-samsung: linux-samsung-tuna: enable wifi P2P support

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-android: chroot-script: separate common init script and machine settings

* we should try to minimize the need to have a init script per machine but enabled the
  machine layers to configure the required bits in a separate configuration file

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-android: chroot-script: add possiblity to boot from system partition

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-samsung: systemd-machine-units: add pvrinit service configuration for tuna

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-android: android-system-image: don't provide adbd anymore

adbd is now provided by android-tools in a glibc variant.

Signed-off-by: Simon Busch <morphis@gravedo.de>
android-system: add as replacement for android-initscripts with systemd support

Signed-off-by: Simon Busch <morphis@gravedo.de>
android-tools: add as replacement to adb recipe

* build from ubuntu's android-tools package source
* has systemd support to enable USB adb gadget and starting adbd daemon on system startup

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-samsung: systemd-machine-units: only exclude rndissetup when no adb in DISTRO_FEATURE

Signed-off-by: Simon Busch <morphis@gravedo.de>