RealView: Add default memory configuration

This patch adds a realview_fixup() function called during booting to set
up the memory banks. This way there is no need to pass a "mem=" argument
on the kernel command line.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --cc arch/arm/mach-realview/core.c
Simple merge

diff --cc arch/arm/mach-realview/core.h
Simple merge

diff --cc arch/arm/mach-realview/realview_eb.c
Simple merge

diff --cc arch/arm/mach-realview/realview_pb1176.c
Simple merge

diff --cc arch/arm/mach-realview/realview_pb11mp.c
Simple merge

diff --cc arch/arm/mach-realview/realview_pba8.c
Simple merge

diff --cc arch/arm/mach-realview/realview_pbx.c
Simple merge