ARM: clps711x: Implement usage "SPARSE_IRQ" kernel option for a platform

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 64a23cb..0203b1b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -372,6 +372,7 @@
 	select CPU_ARM720T
 	select GENERIC_CLOCKEVENTS
 	select NEED_MACH_MEMORY_H
+	select SPARSE_IRQ
 	help
 	  Support for Cirrus Logic 711x/721x/731x based boards.