staging: rtl8192e: rename charData to char_data in delba_param_set union

Fixes a checkpatch CHECK message.
Signed-off-by: William Durand <will+git@drnd.me>
Link: https://lore.kernel.org/r/20210219161400.29316-2-will+git@drnd.meSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl819x_BA.h

@@ -39,7 +39,7 @@ union ba_param_set {
 };
 
 union delba_param_set {
-	u8 charData[2];
+	u8 char_data[2];
 	u16 shortData;
 	struct {
 		u16 Reserved:11;