Fix several -Wno-implicit-fallthrough warnings

GCC is picky about the comment being where the break should go.

Change-Id: I05db2fb34025fefe2c6ddd1274c8e45b7cc5a4b6
Signed-off-by: Richard Hughes <richard@hughsie.com>
Reviewed-on: https://review.coreboot.org/c/30406
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/ich_descriptors.c b/ich_descriptors.c
index 56e846f..944af4c 100644
--- a/ich_descriptors.c
+++ b/ich_descriptors.c
@@ -69,6 +69,7 @@
 	case CHIPSET_C620_SERIES_LEWISBURG:
 		if (cont->NM <= MAX_NUM_MASTERS)
 			return cont->NM;
+		break;
 	default:
 		if (cont->NM < MAX_NUM_MASTERS)
 			return cont->NM + 1;
@@ -238,6 +239,7 @@
 	case CHIPSET_ICH10:
 		if (value > 1)
 			return "reserved";
+		/* Fall through. */
 	case CHIPSET_5_SERIES_IBEX_PEAK:
 	case CHIPSET_6_SERIES_COUGAR_POINT:
 	case CHIPSET_7_SERIES_PANTHER_POINT: