arm64: dts: qcom: sm6350: drop bogus DP PHY clock

arm64: dts: qcom: sm6350: drop bogus DP PHY clock

[ Upstream commit 95fade4016cbd57ee050ab226c8f0483af1753c4 ]

The QMP pipe clock is used by the USB part of the PHY so drop the
corresponding properties from the DP child node.

Fixes: 23737b9557fe ("arm64: dts: qcom: sm6350: Add USB1 nodes")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221026152511.9661-3-johan+linaro@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>