[U-Boot] [PATCH v8 7/9] rockchip: board: evb_rk3399: initialize pwm0 for dispaly backlight

[sjg at google.com]

Enable pwm0 for display of rk3399 evb board. The PWM do not have decicated
interrupt number in dts and can not get periph_id by pinctrl framework. So
init them here.

Signed-off-by: Eric Gao <eric.gao at rock-chips.com>
Reviewed-by: Simon Glass <sjg at chromium.org>

---

Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3:
-Add ret value in debug message.

Changes in v2:
-Add pwm0 pinctrl init for lcd backlight.

 board/rockchip/evb_rk3399/evb-rk3399.c | 7 +++++++
 1 file changed, 7 insertions(+)

Applied to u-boot-rockchip/next, thanks!