msm: implement ARCH_RANDOM
arm: Add ARCH_RANDOM Kconfig
Revert "msm: Adjust the low memory boundary"

This reverts commit e3b13485188da856c225c59071bdf203d66333d2.
Revert "Defconfig: Activado CONFIG_ENABLE_VMALLOC_SAVING"

This reverts commit 0e22130781f78f6b48592f7a60ea5f4b3ceb7976.
Revert "msm: Increase the kernel virtual area to include lowmem"

This reverts commit f55a71c782b4a4ed9a583c1e81682ebe8e53a8da.