GitLab

NXP tool to create pbl from bl2 binary:
- RCW is prepended to BL2.bin
- If TRUSTED_BOARD_BOOT=1, pre-append the CSF header
	to be understood by NXP boot-rom.
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: Iddc7336a045222e2073ddad86358ebc4440b8bcf