[M] Change in coreboot[main]: mb/google/rauru: Add panel driver in mainboard

[Jitao Shi (Code Review)]

Attention is currently required from: Hung-Te Lin, Jarried Lin, Yidi Lin, Yu-Ping Wu.

Jitao Shi has posted comments on this change by Jarried Lin. ( https://review.coreboot.org/c/coreboot/+/85951?usp=email )

Change subject: mb/google/rauru: Add panel driver in mainboard
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Patch Set 12:

(2 comments)

File src/mainboard/google/rauru/panel_oled.c:

https://review.coreboot.org/c/coreboot/+/85951/comment/325bbdf9_d431b6c1?usp... :
PS11, Line 19: mdelay(400);
> I don't think we need this. We take more than 400ms before jumping to payload. […]

Done

https://review.coreboot.org/c/coreboot/+/85951/comment/9bc57328_bce745bc?usp... :
PS11, Line 20: 	gpio_output(GPIO_AP_EDP_BKLTEN, 1);
             : 	gpio_output(GPIO_BL_PWM_1V8, 1);
> We turn on the backlight in the payload. So we should turn off them here.

Done