amdfwtool: Remove comment "fallthrough"

Fix the comment as "checkpatch" says.

Change-Id: Ifa5d7de037aa7024779f3aa4a5d2f5033eed264a
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71648
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/util/amdfwtool/amdfwtool.c b/util/amdfwtool/amdfwtool.c
index 1538a2c..f9d53d0 100644
--- a/util/amdfwtool/amdfwtool.c
+++ b/util/amdfwtool/amdfwtool.c
@@ -2461,13 +2461,13 @@
 		}
 	} else {
 		switch (efs_location) {
-		case 0:          /* Fall through */
-		case 0xFFFA0000: /* Fall through */
-		case 0xFFF20000: /* Fall through */
-		case 0xFFE20000: /* Fall through */
-		case 0xFFC20000: /* Fall through */
-		case 0xFF820000: /* Fall through */
-		case 0xFF020000: /* Fall through */
+		case 0:
+		case 0xFFFA0000:
+		case 0xFFF20000:
+		case 0xFFE20000:
+		case 0xFFC20000:
+		case 0xFF820000:
+		case 0xFF020000:
 			break;
 		default:
 			fprintf(stderr, "Error: Invalid Directory location.\n");