[PATCH -next] tty: hvc: make hvc_rtas_dev static

[ruanjinjie]

The symbol is not used outside of the file, so mark it static.

Fixes the following warning:

drivers/tty/hvc/hvc_rtas.c:29:19: warning: symbol 'hvc_rtas_dev' was
not declared. Should it be static?

Signed-off-by: ruanjinjie <ruanjinjie@xxxxxxxxxx>
---
 drivers/tty/hvc/hvc_rtas.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/hvc/hvc_rtas.c b/drivers/tty/hvc/hvc_rtas.c
index e8b8c645482b..184d325abeed 100644
--- a/drivers/tty/hvc/hvc_rtas.c
+++ b/drivers/tty/hvc/hvc_rtas.c
@@ -26,7 +26,7 @@
 #include "hvc_console.h"
 
 #define hvc_rtas_cookie 0x67781e15
-struct hvc_struct *hvc_rtas_dev;
+static struct hvc_struct *hvc_rtas_dev;
 
 static int rtascons_put_char_token = RTAS_UNKNOWN_SERVICE;
 static int rtascons_get_char_token = RTAS_UNKNOWN_SERVICE;
-- 
2.25.1