usb: typec: ucsi: validate connector number in ucsi_notify_common()

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

usb: typec: ucsi: validate connector number in ucsi_notify_common()

The connector number extracted from CCI via UCSI_CCI_CONNECTOR() is a

7-bit field (0-127) that is used to index into the connector array in

ucsi_connector_change(). However, the array is only allocated for the

number of connectors reported by the device (typically 2-4 entries).

A malicious or malfunctioning device could report an out-of-range

connector number in the CCI, causing an out-of-bounds array access in

ucsi_connector_change().

Add a bounds check in ucsi_notify_common(), the central point where CCI

is parsed after arriving from hardware, so that bogus connector numbers

are rejected before they propagate further.