pwm: support txhd2 pwm driver [1/2]

PD#SWPL-119880

Problem:
there is no txhd2 pwm driver

Solution:
need to support txhd2 pwm driver

Verify:
txhd2 pxp

Change-Id: Ifc6609fc480a6600b9e34f3f1cf0c7c34ef037d4
Signed-off-by: junyi.zhao <junyi.zhao@amlogic.com>
1 file changed