soc: qcom: pmic_glink_altmode: fix port sanity check

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

soc: qcom: pmic_glink_altmode: fix port sanity check

The PMIC GLINK altmode driver currently supports at most two ports.

Fix the incomplete port sanity check on notifications to avoid

accessing and corrupting memory beyond the port array if we ever get a

notification for an unsupported port.