ARM: shmobile: remove NR_IRQS

Remove NR_IRQS and explicitly include mach/irqs.h as needed. shmobile
properly allocates irq_descs for each irqchip, so setting .nr_irqs for
each machine is not needed.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>

arch/arm/mach-shmobile/setup-r8a7740.c

@@ -25,6 +25,7 @@
 #include <linux/serial_sci.h>
 #include <linux/sh_timer.h>
 #include <mach/r8a7740.h>
+#include <mach/irqs.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>