qcom-cpufreq: limit min and max cpu frequencies
msm-sleeper: limit max freq when screen is off

Signed-off-by: flar2 <asegaert@gmail.com>
(cherry picked from commit 80703b88d6618f36f5eb1c19479dc062458523b8)

Conflicts:
	arch/arm/mach-msm/Kconfig
	arch/arm/mach-msm/Makefile
	drivers/cpufreq/qcom-cpufreq.c