zynqmp: Add new API for processing secure images

This patch adds new API for processing secure images. This API
is used for authentication and decryption of secure images using
xilsecure in pmufw.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
diff --git a/plat/xilinx/zynqmp/pm_service/pm_defs.h b/plat/xilinx/zynqmp/pm_service/pm_defs.h
index cc51445..9a8026f 100644
--- a/plat/xilinx/zynqmp/pm_service/pm_defs.h
+++ b/plat/xilinx/zynqmp/pm_service/pm_defs.h
@@ -88,6 +88,7 @@
 	PM_CLOCK_GETRATE,
 	PM_CLOCK_SETPARENT,
 	PM_CLOCK_GETPARENT,
+	PM_SECURE_IMAGE,
 	PM_API_MAX
 };