redefining boost levels
mach-tegra: rework gpuoc to truly allow variant free oc

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
mach-tegra: cpu-tegra: readd ril boost

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
drivers: cpufreq: ignore troll freq of max <= 475Mhz

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>