dt-bindings: phy: add mediatek MIPI CD-PHY module v0.5

This adds the bindings, for the MIPI CD-PHY module v0.5 embedded in
some Mediatek soc, such as the mt8365

Signed-off-by: Florian Sylvestre <fsylvestre@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240111101504.468169-2-jstephan@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>