feat(zynqmp): pass ioctl calls to firmware

Firmware supports new IOCTL for different purposes. To avoid
maintaining new IOCTL IDs in ATF, pass IOCTL call to firmware
for IOCTL IDs implemented in firmware.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Ronak Jain <ronak.jain@xilinx.com>
Change-Id: Ie14697c8da9581b0f695f4d33f05161ece558385