fm10k: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding a couple of break statements instead of
just letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/fm10k/fm10k_mbx.c

@@ -1039,6 +1039,7 @@ static s32 fm10k_mbx_create_reply(struct fm10k_hw *hw,
 	case FM10K_STATE_CLOSED:
 		/* generate new header based on data */
 		fm10k_mbx_create_disconnect_hdr(mbx);
+		break;
 	default:
 		break;
 	}
@@ -2017,6 +2018,7 @@ static s32 fm10k_sm_mbx_process_reset(struct fm10k_hw *hw,
 	case FM10K_STATE_CONNECT:
 		/* Update remote value to match local value */
 		mbx->remote = mbx->local;
+		break;
 	default:
 		break;
 	}