Enable LTR for NVMe so it can use ASPM L1.2.
BUG=b:127593309
TEST=build and boot on sarien and check L1 substate with lspci
before: L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2- ASPM_L1.1+
after: L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
Change-Id: I9842beda6767f758556747f83cfcedbd00612698
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32456
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Roy Mingi Park <roy.mingi.park@intel.com>
a2e7ee729e