This reverts commit a4dca89f.

Marek reported:

"This patch breaks USB-C port on this board.

If I plug in USB-C storage device, it is not detected. If I revert this
patch, it is detected.

Please drop this patch for now."

Revert it to avoid the regression.
Reported-by: Marek Vasut <marex@denx.de>
Closes: https://lore.kernel.org/linux-arm-kernel/623c294a-5c53-4e01-acbf-104acc180e14@denx.de/T/#u
Fixes: a4dca89f ("arm64: dts: imx8mp-dhcom-pdk3: Describe the USB-C connector")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>