[PATCH 1/2] mm/nobootmem.c: remove duplicate macro ARCH_LOW_ADDRESS_LIMIT statements

From: zijun_hu this patch fixes the following bugs: - the same ARCH_LOW_ADDRESS_LIMIT statements are duplicated between header and relevant source - don't ensure ARCH_LOW_ADDRESS_LIMIT perhaps defined by ARCH in asm/processor.h is preferred over default in

[PATCH 1/2] mm/nobootmem.c: remove duplicate macro ARCH_LOW_ADDRESS_LIMIT statements

From: zijun_hu this patch fixes the following bugs: - the same ARCH_LOW_ADDRESS_LIMIT statements are duplicated between header and relevant source - don't ensure ARCH_LOW_ADDRESS_LIMIT perhaps defined by ARCH in asm/processor.h is preferred over default in linux/bootmem.h completely