rtlwifi: rtl8192ce: rtl8192cu: Fix most sparse warnings

Fix most sparse warnings in rtlwifi, rtl8192ce and rtl8192cu drivers.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rtlwifi/rtl8192ce/hw.c b/drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
index 794b4b6..4a56138 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/hw.c
@@ -2177,7 +2177,7 @@
 	}
 }
 
-void rtl8192ce_bt_var_init(struct ieee80211_hw *hw)
+static void rtl8192ce_bt_var_init(struct ieee80211_hw *hw)
 {
 	struct rtl_pci_priv *rtlpcipriv = rtl_pcipriv(hw);