thunderbolt: Fix tb_pcib device matching to check PCI class

[guest-seuros]

Summary

Light Ridge and earlier Thunderbolt controllers reuse the same device ID (0x1513) for both the NHI (class 0x088000) and PCI bridges (class 0x060400).

Without checking the PCI class, tb_pcib would incorrectly match NHI devices, causing a panic when trying to attach bridge code to non-bridge hardware.

Add PCI class check to tb_pcib_find_ident() to only match actual PCI-PCI bridges (PCIC_BRIDGE/PCIS_BRIDGE_PCI).

[obiwac]

This makes sense, but do note that light ridge is not currently in tb_pcib_identifiers and probably won't be supported any time soon (if ever) due to it I'd assume using an internal connection manager

I will test this once I get back to USB4 work

sys/dev/thunderbolt/tb_pcib.c

122

maybe this comment could be more explicit and mention that some controllers have the same ID for the bridge and NHI

[guest-seuros]

I have the full thunderbolt 1/2/3/4 work lined up... I'm trying to split them into smaller chuncks .

I still need to handle the detach and suspend (they crash) in TB1 then i will measure the speeds.

[jhb]

guest-seuros: Could you test D54158 if you have an easy way to do so?