wl1251: rename reg.h to wl1251_reg.h

Now that wl1271 doesn't use reg.h anymore, it can be renamed to
wl1251_reg.h.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1251_ps.c b/drivers/net/wireless/wl12xx/wl1251_ps.c
index 36acde0..c53e287 100644
--- a/drivers/net/wireless/wl12xx/wl1251_ps.c
+++ b/drivers/net/wireless/wl12xx/wl1251_ps.c
@@ -21,7 +21,7 @@
  *
  */
 
-#include "reg.h"
+#include "wl1251_reg.h"
 #include "wl1251_ps.h"
 #include "wl1251_cmd.h"
 #include "wl1251_io.h"