[L] Change in coreboot[master]: drivers/intel/fsp2_0: Add API to convert BMP images to GOP BLT buffer

[Paul Menzel (Code Review)]

Attention is currently required from: Andrey Petrov, Kapil Porwal, Nick Vaccaro, Subrata Banik.

Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/76921?usp=email )

Change subject: drivers/intel/fsp2_0: Add API to convert BMP images to GOP BLT buffer
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Patch Set 3:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/76921/comment/4eccaeea_95df80af :
PS3, Line 15: bootloader
Wrong term?

https://review.coreboot.org/c/coreboot/+/76921/comment/3fa7f95a_187c01f6 :
PS3, Line 18: It also adds a
            : new config (BMP_LOGO_TO_GOP_BLT) to ensure backward compatibility with
            : older generation FSP.
Can’t this (the FSP version) be detected at runtime?

File src/drivers/intel/fsp2_0/fsp_gop_blt.c:

PS3: 
How special is `efi_bmp_image_header`? Otherwise most of these functions (check, if the image is valid) could be common code in coreboot.