staging:rtl8192u: Rename Channel - Style

The function dot11d_get_max_tx_pwr_in_dbm() uses a parameter name,
Channel, which causes a checkpatch issue with CamelCase naming. The
parameter has been renamed to channel.

The change is a coding style change which should have no impact on
runtime code execution.
Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/ieee80211/dot11d.h

@@ -49,7 +49,7 @@ void dot11d_update_country_ie(struct ieee80211_device *dev,
 			      u8 *addr,
 			      u16 coutry_ie_len,
 			      u8 *coutry_ie);
-u8 dot11d_get_max_tx_pwr_in_dbm(struct ieee80211_device *dev, u8 Channel);
+u8 dot11d_get_max_tx_pwr_in_dbm(struct ieee80211_device *dev, u8 channel);
 void DOT11D_ScanComplete(struct ieee80211_device *dev);
 int IsLegalChannel(struct ieee80211_device *dev, u8 channel);
 int ToLegalChannel(struct ieee80211_device *dev, u8 channel);