fix(zynqmp): remove additional 0x in %p print

%p is already printing value in hex that's why 0x prefix is not needed.
Origin message looks like this
"NOTICE:  Can't read DT at 0x0x100000"
and after fixing
"NOTICE:  Can't read DT at 0x100000"

Signed-off-by: Michal Simek <michal.simek@amd.com>
Change-Id: If83c485a61441f6105d8cbd797f04060dfce2817
diff --git a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
index 38ad32b..1d59537 100644
--- a/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
+++ b/plat/xilinx/zynqmp/bl31_zynqmp_setup.c
@@ -176,7 +176,7 @@
 
 	/* Return if no device tree is detected */
 	if (fdt_check_header(dtb) != 0) {
-		NOTICE("Can't read DT at 0x%p\n", dtb);
+		NOTICE("Can't read DT at %p\n", dtb);
 		return;
 	}