Add default kernel and base for factory ramdisk.
Add default kernel and base for factory ramdisk.

factory_ramdisk.img now is a real u-boot img containing
a kernel and memory offset metadata.

Change-Id: I9b4624eab8a6f769bb8bf0568484ee1865267c08

ND-3500/platform_manifest,fallouttester/platform_manifest,hagar006/platform_manifest,xorware/android_build,xorware/android_build,Hybrid-Power/startsync,xorware/android_build,xorware/android_build,see4ri/lolili,RR-msm7x30/platform_manifest,pranav01/platform_manifest,knone1/platform_manifest,xorware/android_build