meta-asus/meta-samsung: update android-system-image-* to 73

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-asus: linux-asus-grouper: bump SRCREV for proper touchscreen detection

Signed-off-by: Simon Busch <morphis@gravedo.de>
meta-android: android-system: start everything inside a lxc container

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