Help me resolve a linux bug by updating the kernel

Currently, the trackpoint of the Lenovo T14s (AMD) is not working properly on Linux Kernels. Three days ago, a patch was uploaded which supposedly fixes the issue: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/input/mouse/elantech.c?h=v5.15.3&id=4f43e1c69280313f121283cb5c16e5e0b1036b3a

Your task would be to help me apply this patch to my current Linux kernel (KDE Neon 25th Anniversary Edition). Reward is 50$.