drm/msm/gem: Rename update_inactive

Really what this is doing is updating various LRU lists.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/496115/
Link: https://lore.kernel.org/r/20220802155152.1727594-6-robdclark@gmail.com