Change in coreboot[master]: device: Add pciexp_find_next_extended_cap function

[build bot (Jenkins) (Code Review)]

Attention is currently required from: Francois Toguo Fotso, Tim Wawrzynczak, Karthik Ramasubramanian.
build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57784 )

Change subject: device: Add pciexp_find_next_extended_cap function
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Patch Set 3:

(1 comment)

File src/device/pciexp_device.c:

Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-139921):
https://review.coreboot.org/c/coreboot/+/57784/comment/0f909c74_54561c06 
PS3, Line 17: 	        this_cap = pci_read_config32(dev, this_cap_offset);
code indent should use tabs where possible