this patch put the thermal zone and gpu cooling device bind in dts,
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.

Change-Id: I0607eda3219981514b05b8057ce485498e401cb7
Signed-off-by: Dandan Sun <dandan.sun@nxp.com>