arm64: dts: qcom: x1e80100: Add PCIe lane equalization preset properties

arm64: dts: qcom: x1e80100: Add PCIe lane equalization preset properties

Add PCIe lane equalization preset properties for 8 GT/s and 16 GT/s data
rates used in lane equalization procedure.

Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250328-preset_v6-v9-1-22cfa0490518@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>