input: add generic touchboost driver based on CAF's cpu-boost driver code.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/input/touchscreen/Makefile
input: touchboost: don't refresh the policy limits if the current frequency is not lower than input_boost_freq.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>