MIPS: BCM47XX: add vectored interrupt support

This adds support for vectored interrupt which is supported by the SoC
using a MIPS 74K CPU like the BCM4716 and BCM4706.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6290/
diff --git a/arch/mips/bcm47xx/Kconfig b/arch/mips/bcm47xx/Kconfig
index a29f51d..df549af 100644
--- a/arch/mips/bcm47xx/Kconfig
+++ b/arch/mips/bcm47xx/Kconfig
@@ -21,6 +21,7 @@
 config BCM47XX_BCMA
 	bool "BCMA Support for Broadcom BCM47XX"
 	select SYS_HAS_CPU_MIPS32_R2
+	select CPU_MIPSR2_IRQ_VI
 	select BCMA
 	select BCMA_HOST_SOC
 	select BCMA_DRIVER_MIPS