dt-bindings: Revert "dt-bindings: soc: grf: add naneng combo phy register compatible"

This reverts commit b3df807e ("dt-bindings: soc: grf: add naneng
combo phy register compatible") as that was wrongly merged, so better to
drop the wrong patch

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20220302143427.447748-1-vkoul@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>