ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm
ARM: dts: AM33XX: Add PWM backlight DT data to am335x-evm

PWM output from ecap0 uses as backlight source. Also adds low threshold
value to have a uniform divisions in brightness-levels scales.

Signed-off-by: Philip Avinash <9381eba3c30eb64030355c9f6d3d59119afb62a9@ti.com>
Reviewed-by: Thierry Reding <b75a4d02013b0e68ae2c6bb0dcfd4b7bec282dc9@avionic-design.de>
Signed-off-by: Sebastian Andrzej Siewior <265264fed90bdf8e813a354375ec16f47ebdb1c5@linutronix.de>
Signed-off-by: Benoit Cousson <21121a092bab379661ea3157ef0efa1632c71670@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs