GCC4.6: Squash warning in cmd_pmc440.c

cmd_pmc440.c: In function 'do_painit':
cmd_pmc440.c:371: warning: format '%08x' expects type 'unsigned int', but
argument 2 has type 'phys_size_t'

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>

board/esd/pmc440/cmd_pmc440.c

@@ -368,7 +368,7 @@ int do_painit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	 */
 	param = base - (pram << 10);
 	printf("PARAM: @%08x\n", param);
-	debug("memsize=0x%08x, base=0x%08x\n", gd->bd->bi_memsize, base);
+	debug("memsize=0x%08x, base=0x%08x\n", (u32)gd->bd->bi_memsize, base);
 
 	/* clear entire PA ram */
 	memset((void*)param, 0, (pram << 10));