[M] Change in coreboot[main]: mb/google/dedede/var/boxy: Wait up for 3s for HPD ready signal

[Joey Peng (Code Review)]

Attention is currently required from: Derek Huang, Paul Menzel, Reka Norman.

Joey Peng has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78146?usp=email )

Change subject: mb/google/dedede/var/boxy: Wait up for 3s for HPD ready signal
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Patch Set 8:

(1 comment)

File src/mainboard/google/dedede/variants/boxy/ramstage.c:

https://review.coreboot.org/c/coreboot/+/78146/comment/a46399d8_25ae3b2d :
PS5, Line 69: if (display_init_required()
            : 		&& !gpio_get(GPIO_USB_C0_HPD)) {
            : 		/* This has to be done before FSP-S runs. */
            : 		if (google_chromeec_wait_for_displayport(display_timeout_ms)) {
            : 			wait_for_hpd(GPIO_USB_C0_HPD, display_timeout_ms);
            : 		}
            : 	} else if (display_init_required()
            : 		&& !gpio_get(GPIO_USB_C1_HPD)) {
            : 		/* This has to be done before FSP-S runs. */
            : 		if (google_chromeec_wait_for_displayport(display_timeout_ms)) {
            : 			wait_for_hpd(GPIO_USB_C1_HPD, display_timeout_ms);
            : 		}
            : 	}
> We have 1 HDMI and 2 Type-C ports for boxy project. […]

Also we will not have cases connected to two type-c monitors since boxy need 1 type-c port to be connected to adapter.