automake: include vulkan subdir after wayland-drm
automake: include vulkan subdir after wayland-drm

We'll reuse the existing wayland-drm static library with next commit.

Signed-off-by: Emil Velikov <f20878473f414da183da19ee25c8722cc1d711e4@collabora.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler