MIPS: ath79: Change number of available IRQs

The status register of the miscellaneous interrupt controller is 32 bits
wide, but the actual value of NR_IRQS covers only 8 of them. Change
NR_IRQS in order to make all of those interrupt lines usable.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2441/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/mach-ath79/irq.h

@@ -10,10 +10,10 @@
 #define __ASM_MACH_ATH79_IRQ_H
 
 #define MIPS_CPU_IRQ_BASE	0
-#define NR_IRQS			16
+#define NR_IRQS			40
 
 #define ATH79_MISC_IRQ_BASE	8
-#define ATH79_MISC_IRQ_COUNT	8
+#define ATH79_MISC_IRQ_COUNT	32
 
 #define ATH79_CPU_IRQ_IP2	(MIPS_CPU_IRQ_BASE + 2)
 #define ATH79_CPU_IRQ_USB	(MIPS_CPU_IRQ_BASE + 3)