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>

drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c

@@ -634,7 +634,7 @@ static void rtl92c_dm_txpower_tracking_callback_thermalmeter(struct ieee80211_hw
 	u8 thermalvalue, delta, delta_lck, delta_iqk;
 	long ele_a, ele_d, temp_cck, val_x, value32;
 	long val_y, ele_c;
-	u8 ofdm_index[2], cck_index, ofdm_index_old[2], cck_index_old;
+	u8 ofdm_index[2], cck_index = 0, ofdm_index_old[2], cck_index_old = 0;
 	int i;
 	bool is2t = IS_92C_SERIAL(rtlhal->version);
 	u8 txpwr_level[2] = {0, 0};

drivers/net/wireless/rtlwifi/rtl8192c/fw_common.c

@@ -293,7 +293,7 @@ static void _rtl92c_fill_h2c_command(struct ieee80211_hw *hw,
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 	u8 boxnum;
-	u16 box_reg, box_extreg;
+	u16 box_reg = 0, box_extreg = 0;
 	u8 u1b_tmp;
 	bool isfw_read = false;
 	bool bwrite_sucess = false;

drivers/net/wireless/rtlwifi/rtl8192ce/rf.c

@@ -202,7 +202,7 @@ static void _rtl92c_get_txpower_writeval_by_regulatory(struct ieee80211_hw *hw,
 	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 @@ static bool _rtl92c_phy_rf6052_config_parafile(struct ieee80211_hw *hw)
 {
 	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;

drivers/net/wireless/rtlwifi/rtl8192cu/hw.c

@@ -921,7 +921,7 @@ static void _rtl92cu_init_chipT_queue_priority(struct ieee80211_hw *hw,
 					       u8 out_ep_num,
 					       u8 queue_sel)
 {
-	u8	hq_sele;
+	u8 hq_sele = 0;
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 
 	switch (out_ep_num) {