PCI: qcom: Sort and group registers and bitfield definitions

[ Upstream commit 769e49d8 ]

Sorting the registers and their bit definitions will make it easier to add
more definitions in the future and it also helps in maintenance.

While at it, let's also group the registers and bit definitions separately
as done in the pcie-qcom-ep driver.

Link: https://lore.kernel.org/r/20230316081117.14288-4-manivannan.sadhasivam@linaro.org


Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Stable-dep-of: 60f0072d ("PCI: qcom: Use DWC helpers for modifying the read-only DBI registers")
Signed-off-by: Sasha Levin <sashal@kernel.org>