irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency

This can compile for MIPS (or anything else) now.
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lkml.kernel.org/r/1415342669-30640-8-git-send-email-cernekee@gmail.comSigned-off-by: Jason Cooper <jason@lakedaemon.net>

drivers/irqchip/Kconfig

@@ -50,7 +50,6 @@ config ATMEL_AIC5_IRQ
 
 config BRCMSTB_L2_IRQ
 	bool
-	depends on ARM
 	select GENERIC_IRQ_CHIP
 	select IRQ_DOMAIN