x86: mrc: Correct SPL debug message

SPL printf() does not normally support %#x so just use %x instead. Hex is
expected in U-Boot anyway.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/lib/mrccache.c b/arch/x86/lib/mrccache.c
index 38632e5..2f6f688 100644
--- a/arch/x86/lib/mrccache.c
+++ b/arch/x86/lib/mrccache.c
@@ -303,7 +303,7 @@
 	mrc = &gd->arch.mrc[type];
 	if (!mrc->len)
 		return 0;
-	log_debug("Saving %#x bytes of MRC output data type %d to SPI flash\n",
+	log_debug("Saving %x bytes of MRC output data type %d to SPI flash\n",
 		  mrc->len, type);
 	ret = mrccache_get_region(type, &sf, &entry);
 	if (ret)