soc/intel/meteorlake: Determine TBT controllers exist by VID/DID

The original code uses TRE0-TRE3 register to determine whether or not
the TBT controller exists. However, there is a remap in fsp could confuse
the TRPx._STA.
Ex:
    Disable TBT controller 0 on b:0 d:7 f:0
    Enable TBT controller 1 on b:0 d:7 f:1
The FSP will do the remap and after the remap:
    TBT controller 1 is on b:0 d:7 f:0
    TBT controller 0 is on b:0 d:7 f:1

This is becuase func 0 must exist per pci spec.
However, the TRE0-TRE3 will not be remapped so that the ACPI
TRPx._STA method could be confused.
In such scenario, TRP0._STA will return 0x0, TRP1._STA will return
0xf which is wrong because TBT controller 1 is now at b:0 d:7 f:0

TEST=tested on rex and _TRPx._STA returns correctly. TBT function OK

Change-Id: I54f2ea99cd1ec73dd0b71a6ba738aa927b0ae80f
Signed-off-by: Kane Chen <kane.chen@intel.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81842
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

0 files changed, 0 insertions, 0 deletions