feat(versal): enhance PM_IOCTL EEMI API to support additional arg

feat(versal): enhance PM_IOCTL EEMI API to support additional arg

Currently, SMC handler is limited to parsing 5 arguments (1 API ID + 4
32-bit command args). Extend this handling to support one more 32-bit
command argument which is necessary to support new IOCTL IDs for
secure read/write interface.

Note that, this change is completely transparent and does not affect
existing functionality of any of the EEMI APIs.

Change-Id: I72016620eeeaf598f14853512120bfb30bb9a3e9
Signed-off-by: Izhar Ameer Shaikh <izhar.ameer.shaikh@xilinx.com>
Signed-off-by: Tanmay Shah <tanmay.shah@xilinx.com>