chore(zynqmp): fix comment style in zynqmp_def.h

Add missing space in one line comment to follow common coding style.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Change-Id: Idebf8f34bf48444ee20a68ac3e6fd7f5a41bf8b0
diff --git a/plat/xilinx/zynqmp/include/zynqmp_def.h b/plat/xilinx/zynqmp/include/zynqmp_def.h
index 877127b..428bed5 100644
--- a/plat/xilinx/zynqmp/include/zynqmp_def.h
+++ b/plat/xilinx/zynqmp/include/zynqmp_def.h
@@ -352,7 +352,7 @@
 #define RESTART_SCOPE_SHIFT			(3)
 #define RESTART_SCOPE_MASK			(0x3U << RESTART_SCOPE_SHIFT)
 
-/*AFI registers */
+/* AFI registers */
 #define  AFIFM6_WRCTRL		U(13)
 #define  FABRIC_WIDTH		U(3)