staging: rtl8188eu: Move { after function to new line

Fix an error detected by checkpatch.pl on line 75 and move the opening
brace after the function signature to a new line.

Signed-off-by: Munir Contractor <munircontractor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>