thermal: ti-soc-thermal: add OMAP36xx support

Add OMAP36xx support to ti-soc-thermal driver. This
chip is also unreliable. The data provided here is
based on OMAP36xx TRM:
http://www.ti.com/lit/ug/swpu177aa/swpu177aa.pdf



Signed-off-by: Eduardo Valentin <edubezva@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>