ARM64: Kconfig: Select mbigen interrupt controller on Hisilicon platform

As a interrupt controller used on some of hisilicon SOCs(660,1610 etc.),
mbigen driver should be enabled when CONFIG_ARCH_HISI is enabled.
Signed-off-by: Ma Jun <majun258@huawei.com>
Cc: mark.rutland@arm.com
Cc: jason@lakedaemon.net
Cc: marc.zyngier@arm.com
Cc: Catalin.Marinas@arm.com
Cc: guohanjun@huawei.com
Cc: Will.Deacon@arm.com
Cc: huxinwei@huawei.com
Cc: lizefan@huawei.com
Cc: dingtianhong@huawei.com
Cc: zhaojunhua@hisilicon.com
Cc: liguozhu@hisilicon.com
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1458723993-21044-2-git-send-email-majun258@huawei.comSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/arm64/Kconfig.platforms

@@ -37,6 +37,7 @@ config ARCH_LAYERSCAPE
 
 config ARCH_HISI
 	bool "Hisilicon SoC Family"
+	select HISILICON_IRQ_MBIGEN
 	help
 	  This enables support for Hisilicon ARMv8 SoC family