fallthrough fixes for Clang for 5.14-rc4

Hi Linus,
 
 Please, pull the following patches that fix some fall-through warnings
 when building with Clang and -Wimplicit-fallthrough on ARM.
 
 Thanks
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Merge tag 'fallthrough-fixes-clang-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull fallthrough fixes from Gustavo Silva:
 "Fix some fall-through warnings when building with Clang and
  '-Wimplicit-fallthrough' on ARM"

* tag 'fallthrough-fixes-clang-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  scsi: fas216: Fix fall-through warning for Clang
  scsi: acornscsi: Fix fall-through warning for clang
  ARM: riscpc: Fix fall-through warning for Clang

arch/arm/mach-rpc/riscpc.c

@@ -49,6 +49,7 @@ static int __init parse_tag_acorn(const struct tag *tag)
 		fallthrough;	/* ??? */
 	case 256:
 		vram_size += PAGE_SIZE * 256;
+		break;
 	default:
 		break;
 	}

drivers/scsi/arm/acornscsi.c

@@ -2642,6 +2642,7 @@ int acornscsi_abort(struct scsi_cmnd *SCpnt)
 //#endif
 		clear_bit(SCpnt->device->id * 8 +
 			  (u8)(SCpnt->device->lun & 0x7), host->busyluns);
+		fallthrough;
 
 	/*
 	 * We found the command, and cleared it out.  Either

drivers/scsi/arm/fas216.c

@@ -1375,6 +1375,7 @@ static void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigne
 		case IS_COMPLETE:
 			break;
 		}
+		break;
 
 	default:
 		break;