kernel_android: depend only on initramfs-android-image:do_rootfs

* image.bbclass now adds dependency on kernel
  do_build[depends] += virtual/kernel:do_deploy
  lower dependency in initramfs from do_build to do_rootfs to resolve
  dependency loop

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Merge branch 'shr'