Allow architectures to indicate that they will be providing hooks to
indice installed memory areas, memory_present().  Provide prototypes
for the i386 implementation.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Martin Bligh <mbligh@aracnet.com>

diffstat generify-memory-present
---

diff -upN reference/arch/i386/Kconfig current/arch/i386/Kconfig
--- reference/arch/i386/Kconfig
+++ current/arch/i386/Kconfig
@@ -773,7 +773,7 @@ config HAVE_ARCH_BOOTMEM_NODE
 	depends on NUMA
 	default y
 
-config HAVE_MEMORY_PRESENT
+config ARCH_HAVE_MEMORY_PRESENT
 	bool
 	depends on DISCONTIGMEM
 	default y
diff -upN reference/mm/Kconfig current/mm/Kconfig
--- reference/mm/Kconfig
+++ current/mm/Kconfig
@@ -53,3 +53,7 @@ config FLATMEM
 config NEED_MULTIPLE_NODES
 	def_bool y
 	depends on DISCONTIGMEM || NUMA
+
+config HAVE_MEMORY_PRESENT
+	def_bool y
+	depends on ARCH_HAVE_MEMORY_PRESENT