agl-compsitor: Bump SRCREV for agl-compositor

agl-compsitor: Bump SRCREV for agl-compositor

This is just for picking a single fix for multiple outputs as seen
with agl-kvm builds but as well when having multiple output connectors.

In detail, since the last update:

- c1610846f53a0d722da9 layout: Don't assume we have background surface set-up

Bug-AGL: SPEC-5205
Change-Id: Ie4d9b0fd233774abdb37fc00d1dfa2ad0b6c50c1
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/30148
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account