ARM: dts: qcom: Set PCIe Wr halt to 1GB and disable BDF halt for sdxlemur

This change will set the PCIe Wr halt window size to 1GB and
disables BDF halt for sdxlemur for HSP MBB direct attach.

In sdxlemur for HSP MBB direct attaches observed throughput degradation
due to PCIe latencies with default PCIe write halt window of 1MB and
BDF halt feature enable.
So, increased PCIe Wr halt window size to 1GB and disabled
BDF halt for sdxlemur.

Change-Id: If18101e5ea9b969a8f7d9dc66d2c795d5a960507