cpu-control: Open code cpufreq_parse_governor()

It appears that the kernel does not contain cpufreq_parse_governor()
(symsearch cannot find it)
cpu_control: add an extra tab for formatting in cpu_cur_opp_show()
omap443x_temp_sensor: Fix throttle message spacing
omap443x_temp_sensor: Fix cpufreq maximum frequency change for throttle

Turns out that cpufreq's __cpufreq_set_policy() will copy the original
policy's cpuinfo over the new policy's. So, we have to edit the original
policy's cpuinfo instead.
omap443x_temp_sensor: Allow reloading of the driver

The temperature sensor device is added to the device tree every time the
module is loaded - but this will fail if the module is loaded a second
time. So, allow this failure and continue loading the driver.