MRC platforms: Fix MRC version printk format specifiers

The printed values are unsigned, and should be printed accordingly.

Change-Id: Ie5edce914c389c70460b1ed3390731e3568340dd
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/soc/intel/broadwell/raminit.c b/src/soc/intel/broadwell/raminit.c
index fccb20c..9db34be 100644
--- a/src/soc/intel/broadwell/raminit.c
+++ b/src/soc/intel/broadwell/raminit.c
@@ -130,7 +130,7 @@
 
 	/* Print the MRC version after executing the UEFI PEI stage. */
 	u32 version = mchbar_read32(MRC_REVISION);
-	printk(BIOS_DEBUG, "MRC Version %d.%d.%d Build %d\n",
+	printk(BIOS_DEBUG, "MRC Version %u.%u.%u Build %u\n",
 		(version >> 24) & 0xff, (version >> 16) & 0xff,
 		(version >>  8) & 0xff, (version >>  0) & 0xff);