ipq: boot: Signed Rootfs authentication

Rootfs's certificate is appended in kernel image. Read from
there, pack it with rootfs image and validate rootfs.

Change-Id: I2b40f88e23225c17362a02f6c7868edda2a8e8bd
Signed-off-by: Praveenkumar I <ipkumar@codeaurora.org>
4 files changed