ARM: bcm281xx: Turn on L2 cache.

Turning on the L2 cache for the bcm281xx family.
Signed-off-by: NMarkus Mayer <markus.mayer@linaro.org>
Acked-by: NChristian Daudt <csd@broadcom.com>

arch/arm/mach-bcm/Kconfig

@@ -12,6 +12,7 @@ config ARCH_BCM
 	select GPIO_BCM
 	select SPARSE_IRQ
 	select TICK_ONESHOT
+	select CACHE_L2X0
 	help
 	  This enables support for system based on Broadcom SoCs.
 	  It currently supports the 'BCM281XX' family, which includes