Add bindings documentation for TMU (Thermal Monitoring Unit) on QorIQ
platform.
Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
Reviewed-by: Scott Wood <scottwood@freescale.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Scott Wood <scottwood@freescale.com>