[M] Change in coreboot[main]: mb/google/dedede/var/boxy: Add wait for HPD function

[Joey Peng (Code Review)]

Attention is currently required from: Derek Huang.

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

Change subject: mb/google/dedede/var/boxy: Add wait for HPD function
......................................................................

Patch Set 4:

(1 comment)

File src/mainboard/google/dedede/mainboard.c:

https://review.coreboot.org/c/coreboot/+/78146/comment/451dd7aa_377181d7 :
PS3, Line 46: 	variant_display_init();
> You need to declare this function in src/mainboard/google/dedede/variants/baseboard/include/baseboar […]

Done