nxp: supports two mode of trusted board boot

NXP SoC supports two TBB mode:
- MBED_TLS based
  -- ROTK key hash is placed as part of the BL2 binary at section:
     --- .rodata.nxp_rotpk_hash
  -- Supporting non-volatile counter via SFP.
     -- platform function used by TFA common authentication code.

- NXP CSF based
  -- ROTK key deployment vary from MBEDTLS

Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: Ib0f0bf024fd93de906c5d4f609383ae9e02b2fbc
4 files changed