Add EcoNet EN751221 and EN7528 PCIe PHY support.

This is split from a larger PCIe patchset which crossed multiple
subsystems. I'm not labeling this a v3 because it's a new patchset, but
I'm keeping the historical record anyway.

Changes from econet-pcie v2: none relevant to this patch set
* econet-pcie v2: https://lore.kernel.org/linux-mips/20260309131818.74467-1-cjd@cjdns.fr

Changes from econet-pcie v1:
* econet,en751221-pcie-phy.yaml Refer to PHYs as "gen1" and "gen2"
* econet-pcie v1: https://lore.kernel.org/linux-mips/20260303190948.694783-1-cjd@cjdns.fr/

Caleb James DeLisle (2):
  dt-bindings: phy: Document PCIe PHY in EcoNet EN751221 and EN7528
  phy: econet: Add PCIe PHY driver for EcoNet EN751221 and EN7528 SoCs.

 .../phy/econet,en751221-pcie-phy.yaml         |  50 +++++
 MAINTAINERS                                   |   7 +
 drivers/phy/Kconfig                           |  12 ++
 drivers/phy/Makefile                          |   1 +
 drivers/phy/phy-econet-pcie.c                 | 180 ++++++++++++++++++
 5 files changed, 250 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/econet,en751221-pcie-phy.yaml
 create mode 100644 drivers/phy/phy-econet-pcie.c


base-commit: 3fa5e5702a82d259897bd7e209469bc06368bf31
-- 
2.39.5