MLK-17915: cmd: blob: Instantiate RNG before running CMD_BLOB

MLK-17915: cmd: blob: Instantiate RNG before running CMD_BLOB

U-Boot can instantiate CAAM RNG if needed by crypto operations.
Call sec_init() prior running a blob operation to ensure
RNG is correctly instantiated.

Make sure CAAM clock is enabled and check if a job ring is
available for that operation.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit b2b745515d06f05ea288524e26cf2389d6924ff2)
(cherry picked from commit fe33f7296336b7364fb24ad21b0be32eb5810262)