configure: bump Wayland requirement to 1.11.90

Commit 4ef719c416
"libweston: Implement wl_output version 3 (release request)"
depends on the Wayland commit bad9dc5186e46ab92e1680d1f0ea4a4d4f0f7211
"protocol: Add release (destructor) request to wl_output"

Reported-by: Armin Krezović <krezovic.armin@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

configure.ac

@@ -14,7 +14,7 @@ AC_INIT([weston],
         [weston],
         [http://wayland.freedesktop.org])
 
-WAYLAND_PREREQ_VERSION="1.10.0"
+WAYLAND_PREREQ_VERSION="1.11.90"
 
 AC_SUBST([WESTON_VERSION_MAJOR], [weston_major_version])
 AC_SUBST([WESTON_VERSION_MINOR], [weston_minor_version])