msm: cpufreq: sysfs for max screen off frequency - default 1026MHz

Thanks
@flar2

Source:
https://github.com/flar2/flo/commit/d1c7e6585eadd3924b79b22a263c933d41ea1548

Conflicts:
	arch/arm/mach-msm/Kconfig
msm: cpufreq: set max freq off to 702Mhz
msm: cpufreq: fix sysfs for max screen off
ak_mako_defconfig: enable MSM_SLEEPER