staging: rtl8192e: Cleanup checkpatch -f warnings and errors - Part XVI

This patch removes all the errors and most of the warnings generated by
checkpatch -f for rtllib_softmac_tx.c..

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>