MA-19319-3 add cooling device for the binded thermal sensor

this patch register the gpu cooling device for node "devfreq", thermal policy
thermal_of_populate_bind_params in thermal_of.c will bind the cooling device
and trip point from the map, remove the previous implementation "bind every
thermal zone registered in dts with gpu cooling device thermal-devfreq-%d".

Change-Id: I1240a64d00ac702da19c47da525d67ae6c2c4428
Signed-off-by: Dandan Sun <dandan.sun@nxp.com>