nb/intel/{gm45,sandybridge}: Use same indent levels for switch/case

Use same indent levels for switch/case in order to comply with the
linter.

Change-Id: I64361262e5b16419351fa139c8fdf04c5c07662d
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79444
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/northbridge/intel/sandybridge/bootblock.c b/src/northbridge/intel/sandybridge/bootblock.c
index 9e3708a..421c561 100644
--- a/src/northbridge/intel/sandybridge/bootblock.c
+++ b/src/northbridge/intel/sandybridge/bootblock.c
@@ -10,10 +10,10 @@
 static uint32_t encode_pciexbar_length(void)
 {
 	switch (CONFIG_ECAM_MMCONF_BUS_NUMBER) {
-		case 256: return 0 << 1;
-		case 128: return 1 << 1;
-		case  64: return 2 << 1;
-		default:  return dead_code_t(uint32_t);
+	case 256: return 0 << 1;
+	case 128: return 1 << 1;
+	case  64: return 2 << 1;
+	default:  return dead_code_t(uint32_t);
 	}
 }