ARM: highbank: select SPARSE_IRQ and remove irqs.h

irqs.h is optional now for SPARSE_IRQ, so select it and remove mach/irqs.h
from highbank.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>

arch/arm/Kconfig

@@ -349,6 +349,7 @@ config ARCH_HIGHBANK
 	select GENERIC_CLOCKEVENTS
 	select HAVE_ARM_SCU
 	select HAVE_SMP
+	select SPARSE_IRQ
 	select USE_OF
 	help
 	  Support for the Calxeda Highbank SoC based boards.

arch/arm/mach-highbank/highbank.c

@@ -33,7 +33,6 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
-#include <mach/irqs.h>
 
 #include "core.h"
 #include "sysregs.h"

arch/arm/mach-highbank/include/mach/irqs.h

-#ifndef __MACH_IRQS_H
-#define __MACH_IRQS_H
-
-#define NR_IRQS			192
-
-#endif