Staging: rtl8188eu: Fixed whitespace related coding style issues

This patch fixes two spaces at the start of the line aswell as all space after
opening parenthesis and space before closeing parenthesis checkpatch.pl warnings
in rtw_mlme.h

Signed-off-by: Tim Jester-Pfadt <t.jp@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>