dt-bindings: Add Broadcom STB USB PHY binding document

Add DT bindings document for Broadcom STB USB PHYs

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Al Cooper <alcooperx@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
1 file changed