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

[Bincai Liu (Code Review)]

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

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

Change subject: mb/google/rauru: Add edp driver in mainboard
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Patch Set 5:

(4 comments)

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

PS2:
> i take a look of previous project, it seems that they also name panel_xxx.c, xxx is project name.

Done

https://review.coreboot.org/c/coreboot/+/85951/comment/efb0f4f3_7fa73483?usp... :
PS2, Line 15: struct panel_description *get_navi_description(void);
> it seems that we need create a new header panel.h and then include this panel.h in panel. […]

Done

https://review.coreboot.org/c/coreboot/+/85951/comment/a0d7ee55_9559a69b?usp... :
PS2, Line 24: 	mdelay(400);
> i think this delay is till need

Done

https://review.coreboot.org/c/coreboot/+/85951/comment/947801c5_b9746cab?usp... :
PS2, Line 25: , 1);
            : 	gpio_output(GPIO_BL_PWM_1V8, 1);
> do you mean that we can enable backlight in payload?

Done