CVE-2026-80648 pinctrl: spacemit: fix NULL check in spacemit_pin_set_config

In the Linux kernel, the following vulnerability has been resolved: pinctrl: spacemit: fix NULL check in spacemitpinsetconfig spacemitpinsetconfig looks up the per-pin descriptor with spacemitgetpin then checks the wrong variable for failure: const struct spacemitpin spin = spacemitgetpinpctrl,...