[ARM] Add initial sparsemem support

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4039a13..df051bd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -422,6 +422,8 @@
 	bool "SA1100-based"
 	select ISA
 	select ARCH_DISCONTIGMEM_ENABLE
+	select ARCH_SPARSEMEM_ENABLE
+	select ARCH_SELECT_MEMORY_MODEL
 	select ARCH_MTD_XIP
 	select GENERIC_GPIO
 	select GENERIC_TIME
@@ -774,6 +776,12 @@
 	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.
 
+config ARCH_SPARSEMEM_ENABLE
+	bool
+
+config ARCH_SELECT_MEMORY_MODEL
+	bool
+
 config NODES_SHIFT
 	int
 	default "4" if ARCH_LH7A40X