ARM: Move platform memory reservations out of generic code

Move the platform specific bootmem memory reservations out of
arch/arm/mm/mmu.c into their respective platform files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 7b19c90..afafe4f 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -28,5 +28,6 @@
 
 #endif
 
-void __init bootmem_init(void);
+struct machine_desc;
+void __init bootmem_init(struct machine_desc *);
 void reserve_special_regions(void);