PCI: qcom: Set max OPP before DBI access during resume

PCI: qcom: Set max OPP before DBI access during resume

During resume, qcom_pcie_icc_opp_update() may access DBI registers before
the OPP votes are restored, triggering NoC errors.

Set the PCIe controller to the maximum OPP first in resume_noirq(), then
proceed with link/DBI accesses. The OPP is later updated again based on
the actual link bandwidth requirements.

Introduce a helper to reuse the max-OPP setup code and share it with
probe().

Fixes: 5b6272e0efd5 ("PCI: qcom: Add OPP support to scale performance")
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
[mani: commit log and error log rewording]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260416-setmaxopp-v1-1-6a74e2d945a0@oss.qualcomm.com