fix(plat/xilinx/versal): resolve misra R10.1 in pm services

MISRA Violation: MISRA-C:2012 R.10.1
- Operands shall not be of an inappropriate essential type.

Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Change-Id: I67b5788054a136be8d764472c5d85528a5c4272f
diff --git a/plat/xilinx/versal/pm_service/pm_client.c b/plat/xilinx/versal/pm_service/pm_client.c
index 311a642..77ec20e 100644
--- a/plat/xilinx/versal/pm_service/pm_client.c
+++ b/plat/xilinx/versal/pm_service/pm_client.c
@@ -128,11 +128,11 @@
 		uint32_t base_irq = reg_num << ISENABLER_SHIFT;
 		uint32_t reg = mmio_read_32(isenabler1 + (reg_num << 2));
 
-		if (!reg) {
+		if (reg == 0U) {
 			continue;
 		}
 
-		while (reg) {
+		while (reg != 0U) {
 			enum pm_device_node_idx node_idx;
 			uint32_t idx, irq, lowest_set = reg & (-reg);
 			enum pm_ret_status ret;
@@ -147,7 +147,7 @@
 			reg &= ~lowest_set;
 
 			if ((node_idx != XPM_NODEIDX_DEV_MIN) &&
-			    (!pm_wakeup_nodes_set[node_idx])) {
+			    (pm_wakeup_nodes_set[node_idx] == 0U)) {
 				/* Get device ID from node index */
 				device_id = PERIPH_DEVID(node_idx);
 				ret = pm_set_wakeup_source(node_id,
@@ -176,7 +176,7 @@
 
 	/* Set powerdown request */
 	mmio_write_32(FPD_APU_PWRCTL, mmio_read_32(FPD_APU_PWRCTL) |
-		      proc->pwrdn_mask);
+		      (uint32_t)proc->pwrdn_mask);
 
 	bakery_lock_release(&pm_client_secure_lock);
 }
@@ -196,7 +196,7 @@
 
 	/* Clear powerdown request */
 	mmio_write_32(FPD_APU_PWRCTL, mmio_read_32(FPD_APU_PWRCTL) &
-		      ~primary_proc->pwrdn_mask);
+		      ~((uint32_t)primary_proc->pwrdn_mask));
 
 	bakery_lock_release(&pm_client_secure_lock);
 }