drm/i915/psr: Disable linked plane sel fetch as well

Currently we are not setting linked plane selective area when selective
fetch is about to be disabled for the UV plane. Fix this by simplifying the
loop by just handling plane selective fetch disable and area setting same
way.

Also set the update_planes bit based on comparing old and new plane
selective fetch area. This way both the plane and its linked Y plane are
updated only when their selective fetch area changed.

Fixes: a4f477e6ac17 ("drm/i915/psr: Add proper handling for disabling sel fetch for planes")
Cc: <stable@vger.kernel.org> # v6.8+
Assisted-by: GitHub-Copilot:claude-opus-5
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://patch.msgid.link/20260929094434.77129-4-jouni.hogander@intel.com
(cherry picked from commit b10c83af60cbc00ce4112742fd297581233e43cd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

0 files changed, 0 insertions, 0 deletions