more changes to build initramfs into zImage

Change-Id: I0f05d7ad5179b003274775405bb29b2eb38e30ed
Revert "mount sdcard from .secondrom/media + version 22.0"

This reverts commit 614b2c3cb1ba2cf5e2223f584f64fd019d8f2467.

Conflicts:
	build_combo.sh

Change-Id: I92698ef5fb1761b1b7a9a62fd127e3d4a8b83db9
cam/firmware fix

Change-Id: Ib094c165ffbca563f64c2cce5bdeec11c1cb5aa0