Merge nommu branch

arch/arm/Kconfig

arch/arm/Kconfig-nommu

arch/arm/Makefile

arch/arm/boot/compressed/Makefile

arch/arm/boot/compressed/head.S

arch/arm/kernel/head-nommu.S

arch/arm/kernel/module.c

arch/arm/kernel/process.c

arch/arm/mm/Kconfig

arch/arm/mm/Makefile

arch/arm/mm/abort-lv4t.S

arch/arm/mm/abort-nommu.S

arch/arm/mm/alignment.c

arch/arm/mm/cache-v4.S

arch/arm/mm/fault.c

arch/arm/mm/fault.h

arch/arm/mm/init.c

arch/arm/mm/mm.h

arch/arm/mm/mmu.c

arch/arm/mm/nommu.c