[M] Change in coreboot[master]: drivers/intel/dtbt: Add discrete Thunderbolt driver

[Tim Crawford (Code Review)]

Attention is currently required from: Martin L Roth, Michał Żygowski, Paul Menzel.

Tim Crawford has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75286?usp=email )

Change subject: drivers/intel/dtbt: Add discrete Thunderbolt driver
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Patch Set 6:

(4 comments)

File src/drivers/intel/dtbt/Kconfig:

https://review.coreboot.org/c/coreboot/+/75286/comment/7add1ad6_1add416b :
PS5, Line 2: 	bool
           : 	default n
> Not a requirement, but you could use `def_bool n` here to replace these two lines.

Done

File src/drivers/intel/dtbt/dtbt.c:

https://review.coreboot.org/c/coreboot/+/75286/comment/84ce56fa_20c994b2 :
PS2, Line 36: 	}
> Yeah, those are handy functions. […]

Done

File src/drivers/intel/dtbt/dtbt.c:

https://review.coreboot.org/c/coreboot/+/75286/comment/62d0385f_77916a3e :
PS5, Line 63: printk(BIOS_ERR, "DTBT device invalid\n")
> I see a lot of cases where `dev` is dereferenced without checking. […]

Looks like it is. Dropped the check.

https://review.coreboot.org/c/coreboot/+/75286/comment/e6ef7657_2800455d :
PS5, Line 69: printk(BIOS_ERR, "DTBT bus invalid\n");
> This one probably wants a return as well.

Done