GCC4.6: Squash warning in bus_vcxk.c

bus_vcxk.c:167:2: warning: format '%d' expects type 'int', but argument 2 has
type 'u_long'
bus_vcxk.c:167:2: warning: format '%d' expects type 'int', but argument 3 has
type 'u_long'

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>

drivers/video/bus_vcxk.c

@@ -164,7 +164,7 @@ int vcxk_init(unsigned long width, unsigned long height)
 #else
 	#error CONFIG_SYS_VCXK_DEFAULT_LINEALIGN is invalid
 #endif
-	debug("linesize ((%d + 15) / 8 & ~0x1) = %d\n",
+	debug("linesize ((%ld + 15) / 8 & ~0x1) = %ld\n",
 		display_width, display_bwidth);
 
 #ifdef CONFIG_SYS_VCXK_AUTODETECT