phy: qcom-qmp-combo: fix NULL-deref on runtime resume

In the Linux kernel, the following vulnerability has been resolved:

phy: qcom-qmp-combo: fix NULL-deref on runtime resume

Commit fc64623637da ("phy: qcom-qmp-combo,usb: add support for separate

PCS_USB region") started treating the PCS_USB registers as potentially

separate from the PCS registers but used the wrong base when no PCS_USB

offset has been provided.

Fix the PCS_USB base used at runtime resume to prevent dereferencing a

NULL pointer on platforms that do not provide a PCS_USB offset (e.g.

SC7180).