dt-bindings: phy: Add rk3576 hdptx phy

dt-bindings: phy: Add rk3576 hdptx phy

Add compatible for the HDPTX PHY on rk3576, which is compatible with
rk3588, but without rst_phy/rst_ropll/rst_lcpll.

In fact, these three reset lines are also optional on the rk3588,
they just used for debug, then they were removed on the rk3576 IC
design.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20241231092721.252405-1-andyshrk@163.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>