MIPS: BCM63XX: add external irq support for BCM6345

Add the missing definitions for BCM6345.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/4091/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/bcm63xx/irq.c b/arch/mips/bcm63xx/irq.c
index 18e051a..d40169f 100644
--- a/arch/mips/bcm63xx/irq.c
+++ b/arch/mips/bcm63xx/irq.c
@@ -56,8 +56,8 @@
 #define is_ext_irq_cascaded	0
 #define ext_irq_start		0
 #define ext_irq_end		0
-#define ext_irq_count		0
-#define ext_irq_cfg_reg1	0
+#define ext_irq_count		4
+#define ext_irq_cfg_reg1	PERF_EXTIRQ_CFG_REG_6345
 #define ext_irq_cfg_reg2	0
 #endif
 #ifdef CONFIG_BCM63XX_CPU_6348
@@ -143,11 +143,15 @@
 		irq_stat_addr += PERF_IRQSTAT_6338_REG;
 		irq_mask_addr += PERF_IRQMASK_6338_REG;
 		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6338;
 		break;
 	case BCM6345_CPU_ID:
 		irq_stat_addr += PERF_IRQSTAT_6345_REG;
 		irq_mask_addr += PERF_IRQMASK_6345_REG;
 		irq_bits = 32;
+		ext_irq_count = 4;
+		ext_irq_cfg_reg1 = PERF_EXTIRQ_CFG_REG_6345;
 		break;
 	case BCM6348_CPU_ID:
 		irq_stat_addr += PERF_IRQSTAT_6348_REG;