dt-bindings: Add AXG shared MIPI/PCIE analog PHY bindings

Add documentation for the shared MIPI/PCIE analog PHY found in AXG
SoCs.

Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
1 file changed