linuxkpi: Add copy_from_user_inatomic_nontemporal() function

In Linux 7.1, __copy_from_user_inatomic_nocache() was renamed to
copy_from_user_inatomic_nontemporal(). This change was backported to
several LTS branches.

This includes Linux 6.12.x and the i915 DRM driver started to use it in
that version.

Reviewed by: bz
Sponsored by: The FreeBSD Foundation

(cherry picked from commit 713b4ce8ef46d7df4ffe50ab6733bb128dbe3cbd)