openrisc: use SPARSE_IRQ

The sparse IRQ framework is preferred nowadays so switch over to it.
Signed-off-by: NJonas Bonn <jonas@southpole.se>
Signed-off-by: NStafford Horne <shorne@gmail.com>

arch/openrisc/Kconfig

@@ -12,6 +12,7 @@ config OPENRISC
 	select HAVE_MEMBLOCK
 	select GPIOLIB
         select HAVE_ARCH_TRACEHOOK
+	select SPARSE_IRQ
 	select GENERIC_IRQ_CHIP
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW

arch/openrisc/include/asm/Kbuild

@@ -29,6 +29,7 @@ generic-y += hw_irq.h
 generic-y += ioctl.h
 generic-y += ioctls.h
 generic-y += ipcbuf.h
+generic-y += irq.h
 generic-y += irq_regs.h
 generic-y += irq_work.h
 generic-y += kdebug.h