uboot-phytec

rk_pwm: use clock framework API to get module clock

This patch use clock API instead of hardcode for get pwm clock.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
Fix printf() to debug() nit:
Signed-off-by: Simon Glass <sjg@chromium.org>