cfg80211: constify name parameter to add_virtual_intf

The name can't be modified by the driver,
make it const.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 994bc4f..d2fb3c3e 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -1030,7 +1030,7 @@
 					struct mwifiex_bssdescriptor *bss_desc);
 
 struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
-					      char *name,
+					      const char *name,
 					      enum nl80211_iftype type,
 					      u32 *flags,
 					      struct vif_params *params);