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>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

include/fsl_sec.h

@@ -344,6 +344,9 @@ struct sg_entry {
 #define FSL_CAAM_MP_PRVK_BYTES		    32
 #define FSL_CAAM_MP_MES_DGST_BYTES	    32
 
+#define FSL_CAAM_ORSR_JRa_OFFSET	0x102c
+#define FSL_CAAM_MAX_JR_SIZE		4
+
 /* blob_dek:
  * Encapsulates the src in a secure blob and stores it dst
  * @src: reference to the plaintext