[S] Change in coreboot[master]: x86: pci_io_cfg: Make constant unsigned to fix out of bounds shift

[build bot (Jenkins) (Code Review)]

Attention is currently required from: Nico Huber, Paul Menzel.

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51292 )

Change subject: x86: pci_io_cfg: Make constant unsigned to fix out of bounds shift
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Patch Set 2:

(2 comments)

Commit Message:

Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-173832):
https://review.coreboot.org/c/coreboot/+/51292/comment/2819f144_bdf92352 
PS2, Line 19: Found-by: UBSAN
Non-standard signature: Found-by:

Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-173832):
https://review.coreboot.org/c/coreboot/+/51292/comment/89dc1635_152862ec 
PS2, Line 19: Found-by: UBSAN
Unrecognized email address: 'UBSAN'