fix(xilinx): fix misra defects

This patch fixes defects 5.5, 10.1, 10.3, 10.4, 10.7 reported
by MISRA-2012 scan.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: Ie6f6e9bf2ce1335bbb61aa2e69a3a196865fd504
diff --git a/plat/xilinx/common/include/pm_node.h b/plat/xilinx/common/include/pm_node.h
index 0d5616c..b6c2d81 100644
--- a/plat/xilinx/common/include/pm_node.h
+++ b/plat/xilinx/common/include/pm_node.h
@@ -18,10 +18,10 @@
 #define NODE_SUBCLASS_SHIFT	20U
 #define NODE_TYPE_SHIFT		14U
 #define NODE_INDEX_SHIFT	0U
-#define NODE_CLASS_MASK_BITS    0x3F
-#define NODE_SUBCLASS_MASK_BITS 0x3F
-#define NODE_TYPE_MASK_BITS     0x3F
-#define NODE_INDEX_MASK_BITS    0x3FFF
+#define NODE_CLASS_MASK_BITS    GENMASK_32(5, 0)
+#define NODE_SUBCLASS_MASK_BITS GENMASK_32(5, 0)
+#define NODE_TYPE_MASK_BITS     GENMASK_32(5, 0)
+#define NODE_INDEX_MASK_BITS    GENMASK_32(13, 0)
 #define NODE_CLASS_MASK         (NODE_CLASS_MASK_BITS << NODE_CLASS_SHIFT)
 #define NODE_SUBCLASS_MASK      (NODE_SUBCLASS_MASK_BITS << NODE_SUBCLASS_SHIFT)
 #define NODE_TYPE_MASK          (NODE_TYPE_MASK_BITS << NODE_TYPE_SHIFT)