kernel-ranchu: add ranchu kernel for sdk builds

For x86 and x86_64, sdk images will include kernel-ranchu that will
boot ranchu devices by qemu2 emulator; kernel-qemu will still be kept
to boot goldfish devices by classic emulator.

Change-Id: Ie2ada109cade730d03e709168802db826442b8d8
(cherry picked from commit eefafd91041967c0c08cb12e7dfbbcf670257d55)
(cherry picked from commit aacab1d961baaf1d1278a64b248361b21ddd2df0)
2 files changed