scsi: bfa: bfa_fcpim: Mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that I replaced "Fall through !!!" with a "fall through"
annotation, which is what GCC is expecting to find.

Addresses-Coverity-ID: 114971 ("Missing break in switch")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

drivers/scsi/bfa/bfa_fcpim.c

@@ -2586,6 +2586,7 @@ bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
 	case FCP_IODIR_RW:
 		bfa_stats(itnim, input_reqs);
 		bfa_stats(itnim, output_reqs);
+		/* fall through */
 	default:
 		bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
 	}
@@ -2820,6 +2821,7 @@ bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
 
 	case BFI_IOIM_STS_TIMEDOUT:
 		bfa_stats(ioim->itnim, iocomp_timedout);
+		/* fall through */
 	case BFI_IOIM_STS_ABORTED:
 		rsp->io_status = BFI_IOIM_STS_ABORTED;
 		bfa_stats(ioim->itnim, iocomp_aborted);
@@ -3215,9 +3217,7 @@ bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
 	switch (event) {
 	case BFA_TSKIM_SM_DONE:
 		bfa_reqq_wcancel(&tskim->reqq_wait);
-		/*
-		 * Fall through !!!
-		 */
+		/* fall through */
 	case BFA_TSKIM_SM_QRESUME:
 		bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
 		bfa_tskim_send_abort(tskim);