[PATCH] libertas: let DRV_NAME be overridable

For now, it's "libertas" by default, but that is overwritten in
if_usb.c/if_bootcmd.c and in if_cs.c.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/libertas/defs.h b/drivers/net/wireless/libertas/defs.h
index c081813..b189d3b 100644
--- a/drivers/net/wireless/libertas/defs.h
+++ b/drivers/net/wireless/libertas/defs.h
@@ -12,7 +12,9 @@
 #define PROC_DEBUG
 #endif
 
-#define DRV_NAME "usb8xxx"
+#ifndef DRV_NAME
+#define DRV_NAME "libertas"
+#endif
 
 
 #define LBS_DEB_ENTER	0x00000001