ARM: 5732/1: remove redundant include file

Remove duplicated #include('s) in arch/arm/mach-bcmring/core.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>