rtlwifi: Fix unitialized variable warnings

In http://lkml.indiana.edu/hypermail/linux/kernel/1104.1/01955.html, Geerti
Uytterhoeven reports the following warnings for the rtlwifi drivers.

src/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c: warning:
	 'cck_index' may be used uninitialized in this function: => 637
src/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c: warning:
	 'cck_index_old' may be used uninitialized in this function: => 637
src/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c: warning:
	 'box_extreg' may be used uninitialized in this function: => 303
src/drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c: warning:
	 'box_reg' may be used uninitialized in this function: => 303
src/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c: warning:
	 'chnlgroup' may be used uninitialized in this function: => 205
src/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c: warning:
	 'u4_regvalue' may be used uninitialized in this function: => 450
src/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c: warning:
	 'hq_sele' may be used uninitialized in this function: => 924

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/rf.c b/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c
index 669b116..e301b12 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192ce/rf.c
@@ -202,7 +202,7 @@
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
 	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
-	u8 i, chnlgroup, pwr_diff_limit[4];
+	u8 i, chnlgroup = 0, pwr_diff_limit[4];
 	u32 writeVal, customer_limit, rf;
 
 	for (rf = 0; rf < 2; rf++) {
@@ -447,7 +447,7 @@
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
-	u32 u4_regvalue;
+	u32 u4_regvalue = 0;
 	u8 rfpath;
 	bool rtstatus;
 	struct bb_reg_def *pphyreg;