staging: rtl8187se: Add necessary whitespaces in while and do-while statements.

Fix whitespaces in do-while statements and while statements as
the codingStyle of the kernel recommends in
ieee80211/ieee80211_softmac.c

Signed-off-by: Ana Rey <anarey@gmail.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>