[L] Change in coreboot[main]: drivers/amd/opensil/mpio: Factor out common MPIO symbols from vendorcode

[Nick Kochlowski (Code Review)]

Attention is currently required from: Felix Held, Fred Reitberger, Jason Glenesk, Martin L Roth, Martin Roth, Matt DeVillier, Varshit Pandya.

Nick Kochlowski has posted comments on this change by Nick Kochlowski. ( https://review.coreboot.org/c/coreboot/+/85632?usp=email )

Change subject: drivers/amd/opensil/mpio: Factor out common MPIO symbols from vendorcode
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Patch Set 12:

(1 comment)

File src/drivers/amd/opensil/mpio/chip.h:

https://review.coreboot.org/c/coreboot/+/85632/comment/cd7d2b45_d3938a46?usp... :
PS11, Line 6: #if CONFIG(OPENSIL_DRIVER)
> hmm, why is this needed to get rid of this build error for the EMULATION_QEMU_X86_Q35 config which s […]

The Makefile.mk in drivers/amd/opensil/mpio is being included and executed from the base Makefile.mk. The chip.c file compiled here includes the header in which the AMD_OPENSIL_MPIO_CHIP_H_FILE config option isn't defined for those builds.

Added the OPENSIL_DRIVER config option as a compilation condition for chip.c as recommended, thanks.