drm/simpledrm: Iterate over damage clips

commit e6d9c0f932f28ad79d6d84dd650e85dfc3a80fe6 from
https://nv-tegra.nvidia.com/r/3rdparty/canonical/linux-jammy.git

 jetson_36.3

Iterate over all damage clips and updated them one by one. Replaces
the merging of damage areas, which can result in significant overhead
if damage areas are not close to each other.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220922130944.27138-5-tzimmermann@suse.de


(cherry picked from commit 52a504e8)
Change-Id: I63c244340aae1e3f40c33c3a903bb36e969f8c6a
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/3rdparty/canonical/linux-jammy/+/2985860


Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Signed-off-by: Rajeshkumar Ramasamy <rajeshkumar.ramasamy@windriver.com>