Change in coreboot[master]: drivers/intel/gma: Move extended VBT just below opregion

[Angel Pons (Code Review)]

Attention is currently required from: Nico Huber, Furquan Shaikh, Maulik V Vaghela, Tim Wawrzynczak, Patrick Rudolph.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55341 )

Change subject: drivers/intel/gma: Move extended VBT just below opregion
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Patch Set 2: Code-Review+1

(3 comments)

Patchset:

PS2: 
Looks reasonable. I'll let others take a look as well.

File src/drivers/intel/gma/opregion.c:

https://review.coreboot.org/c/coreboot/+/55341/comment/deaef2ff_9c5b2c4a 
PS2, Line 271: static void opregion_add_ext_vbt(igd_opregion_t *opregion, uint8_t *ext_vbt, optionrom_vbt_t *vbt)
Does this need to be a separate function?

https://review.coreboot.org/c/coreboot/+/55341/comment/5c513c57_af7787c7 
PS2, Line 288: uint32_t
`size_t` would be more accurate. `cbmem_add()` uses `u64`