[ARM] balance parenthesis in header file

Hello,

	Introduced by:

commit fff14720
Author: Eric Miao <eric.miao@marvell.com>
Date:   Fri Sep 5 22:15:23 2008 +0800

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>