fix(plat/xilinx/versal): resolve misra R10.6 in pm services

MISRA Violation: MISRA-C:2012 R.10.6
- The value of a composite expression shall not be assigned to an object
  with wider essential type.

Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Change-Id: I67ac6b6b4b643f57e76a435345540e241c9a88b9
diff --git a/plat/xilinx/versal/pm_service/pm_client.c b/plat/xilinx/versal/pm_service/pm_client.c
index 47306ec..5f20c3f 100644
--- a/plat/xilinx/versal/pm_service/pm_client.c
+++ b/plat/xilinx/versal/pm_service/pm_client.c
@@ -122,7 +122,7 @@
 	uint8_t pm_wakeup_nodes_set[XPM_NODEIDX_DEV_MAX];
 	uintptr_t isenabler1 = PLAT_VERSAL_GICD_BASE + GICD_ISENABLER + 4;
 
-	zeromem(&pm_wakeup_nodes_set, sizeof(pm_wakeup_nodes_set));
+	zeromem(&pm_wakeup_nodes_set, (u_register_t)sizeof(pm_wakeup_nodes_set));
 
 	for (reg_num = 0; reg_num < NUM_GICD_ISENABLER; reg_num++) {
 		uint32_t base_irq = reg_num << ISENABLER_SHIFT;
@@ -134,8 +134,8 @@
 
 		while (reg) {
 			enum pm_device_node_idx node_idx;
-			uint32_t idx, ret, irq, lowest_set = reg & (-reg);
-
+			uint32_t idx, irq, lowest_set = reg & (-reg);
+			enum pm_ret_status ret;
 			idx = __builtin_ctz(lowest_set);
 			irq = base_irq + idx;
 
@@ -153,7 +153,7 @@
 				ret = pm_set_wakeup_source(node_id,
 							   device_id, 1,
 							   SECURE_FLAG);
-				pm_wakeup_nodes_set[node_idx] = !ret;
+				pm_wakeup_nodes_set[node_idx] = (uint8_t)(!ret);
 			}
 		}
 	}