fix(zynqmp): resolve the misra 4.6 warnings

MISRA Violation: MISRA-C:2012 R.4.6
- Using basic numerical type int rather than a typedef
that includes size and signedness information.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Change-Id: I9fb686e7aa2b85af6dfcb7bb5f87eddf469fb85c
diff --git a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
index 6ded2e2..38ad32b 100644
--- a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
+++ b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
@@ -82,7 +82,7 @@
 				  CONSOLE_FLAG_RUNTIME | CONSOLE_FLAG_BOOT);
 	} else if (ZYNQMP_CONSOLE_IS(dcc)) {
 		/* Initialize the dcc console for debug */
-		int rc = console_dcc_register();
+		int32_t rc = console_dcc_register();
 		if (rc == 0) {
 			panic();
 		}