[PATCH net-next] netdevsim: fix fall-through annotation

["Gustavo A. R. Silva" <gustavo@embeddedor.com>]

Replace "pass through" with a proper "fall through" annotation
in order to fix the following warning:

drivers/net/netdevsim/bus.c: In function ‘new_device_store’:
drivers/net/netdevsim/bus.c:170:14: warning: this statement may fall through [-Wimplicit-fallthrough=]
   port_count = 1;
   ~~~~~~~~~~~^~~
drivers/net/netdevsim/bus.c:172:2: note: here
  case 2:
  ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

This fix is part of the ongoing efforts to enable
-Wimplicit-fallthrough

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/net/netdevsim/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c
index ae482347b67b..fd68eeac574c 100644
--- a/drivers/net/netdevsim/bus.c
+++ b/drivers/net/netdevsim/bus.c
@@ -168,7 +168,7 @@ new_device_store(struct bus_type *bus, const char *buf, size_t count)
 	switch (err) {
 	case 1:
 		port_count = 1;
-		/* pass through */
+		/* fall through */
 	case 2:
 		if (id > INT_MAX) {
 			pr_err("Value of \"id\" is too big.\n");
-- 
2.21.0