dt-bindings: phy: ti,control-phy-otghs: convert to DT schema

Convert TI OMAP Control PHY binding to DT schema.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Charan Pedumuru <charan.pedumuru@gmail.com>
Link: https://patch.msgid.link/20260123-ti-phy-v4-3-b557e2c46e6f@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>