dt-bindings: PCI: kirin: Convert kirin-pcie.txt to yaml

Convert the file into a JSON description at the yaml format.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/081c179ef2e0ddf11566144cd5967b15268565b4.1628061310.git.mchehab+huawei@kernel.org


Signed-off-by: Rob Herring <robh@kernel.org>