[PATCH] airo build fix

drivers/net/wireless/airo.c: In function `issuecommand':
drivers/net/wireless/airo.c:3812: warning: implicit declaration of function `kernel_locked'
*** Warning: "kernel_locked" [drivers/net/wireless/airo.ko] undefined!
Signed-off-by: Andrew Morton <akpm@osdl.org>

drivers/net/wireless/airo.c

@@ -25,6 +25,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/proc_fs.h>
+#include <linux/smp_lock.h>
 
 #include <linux/sched.h>
 #include <linux/ptrace.h>