Merge branch 'pci/controller/dwc-rockchip'

- Add tracepoints for PCIe controller LTSSM transitions and link rate
  changes (Shawn Lin)

- Trace LTSSM events collected by the dw-rockchip debug FIFO (Shawn Lin)

* pci/controller/dwc-rockchip:
  PCI: dw-rockchip: Add pcie_ltssm_state_transition tracepoint support
  Documentation: tracing: Add PCI controller event documentation
  PCI: trace: Add PCI controller tracepoint feature

diff --cc MAINTAINERS
Simple merge

diff --cc drivers/pci/controller/dwc/pcie-dw-rockchip.c
Simple merge