Update the API's for transition of Security Monitor states. Instead
of providing both initial and final states for transition, just
provide final state for transition as Security Monitor driver will
take care of it internally.

Signed-off-by: Sumit Garg <sumit.garg@nxp.com>
[York Sun: Reformatted commit message slightly]
Reviewed-by: York Sun <york.sun@nxp.com>

The Security Monitor is the SOC’s central reporting point for
security-relevant events such as the success or failure of boot
software validation and the detection of potential security compromises.

The API's for transition of Security states have been added
which will be used in case of SECURE BOOT.

Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Gaurav Rana <gaurav.rana@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>