Frenzy/Skids/Prowl: config cleanup

1. Remove CONFIG_CROSS_COMPILE
   - pointing to non-existent toolchain
   - buildroot overrides it with "make ARCH=... CROSS_COMPILE=..."

2. Remove CONFIG_INITRAMFS_SOURCE
   - pointing to non-existent cpio archive
   - buildroot populates it with the proper cpio archive path

Change-Id: I154433f3a934f7b7d91b73e63c4bf938687df038
2 files changed