linux/atheros: fix another 2.6.36 patch issue

SVN-Revision: 23456

target/linux/atheros/patches-2.6.36/211-reset_button-2.6.36.patch

@@ -1,11 +1,12 @@
 --- a/arch/mips/ar231x/reset.c
 +++ b/arch/mips/ar231x/reset.c
-@@ -24,7 +24,7 @@ struct event_t {
+@@ -24,7 +24,8 @@ struct event_t {
  static struct timer_list rst_button_timer;
  static unsigned long seen;
  
--extern struct sock *uevent_sock = NULL;
+-extern struct sock *uevent_sock;
 +struct sock *uevent_sock = NULL;
- EXPORT_SYMBOL_GPL(uevent_sock);
++EXPORT_SYMBOL_GPL(uevent_sock);
  extern u64 uevent_next_seqnum(void);
  
+ static int no_release_workaround = 1;