staging/rtl8187se: Fix spacing coding style in ieee80211/ieee80211_rx.c

The following warnings fixed.
- WARNING: please, no spaces at the start of a line
- WARNING: please, no space before tabs

Signed-off-by: YAMANE Toshiaki <yamanetoshi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>