[PATCH] usbip: change match_busid() to local function

[Németh Márton]

From: Márton Németh <nm127 at freemail.hu>

The function match_busid() is only referenced in the stub_main.c so it can be changed
to static. This will remove the following warning when compiling with "make W=1 ...":

 * drivers/staging/usbip/stub_main.c:40: warning: no previous prototype for ‘match_busid’

Signed-off-by: Márton Németh <nm127 at freemail.hu>
---
diff --git a/drivers/staging/usbip/stub_main.c b/drivers/staging/usbip/stub_main.c
index e9085d6..fc5b829 100644
--- a/drivers/staging/usbip/stub_main.c
+++ b/drivers/staging/usbip/stub_main.c
@@ -37,7 +37,7 @@ struct kmem_cache *stub_priv_cache;
 static struct bus_id_priv busid_table[MAX_BUSID];
 static spinlock_t busid_table_lock;

-int match_busid(const char *busid)
+static int match_busid(const char *busid)
 {
 	int i;