zynqmp: pm: Implement IOCTL APIs for remoteproc

Implement ioctl APIs which uses MMIO operations
to control RPU operations. Below IOCTLs are supported
in this patch:
  * Get RPU operation mode
  * Set RPU operation mode
  * Configure RPU boot address (OCM/TCM)
  * Configure TCM combined mode

Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
diff --git a/plat/xilinx/zynqmp/pm_service/pm_defs.h b/plat/xilinx/zynqmp/pm_service/pm_defs.h
index c9656e3..afd92f6 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_defs.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_defs.h
@@ -75,6 +75,7 @@
 	PM_PINCTRL_SET_FUNCTION,
 	PM_PINCTRL_CONFIG_PARAM_GET,
 	PM_PINCTRL_CONFIG_PARAM_SET,
+	PM_IOCTL,
 	PM_API_MAX
 };