automake: move wayland-drm prior to Vulkan

automake: move wayland-drm prior to Vulkan

Earlier commit was picked from a larger series, but did not consider
that it removed the vulkan <> wayland-drm interdependency.

Rather than reverting everything, temporarily move wayland-drm further
up to resolve the issue. Since it [wayland-drm] does not have any
in-mesa dependencies that's perfectly safe.

Cc: Vedran Miletić <vedran@miletic.net>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100060
Fixes: e135ce6f088 ("vulkan: Build common Vulkan code earlier")
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Javier Jardón <jjardon@gnome.org>