dri_interface: drop __NOT_HAVE_DRM_H magic
dri_interface: drop __NOT_HAVE_DRM_H magic

v2: use HAVE_LIBDRM macro.

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Reviewed-by: Ian Romanick <2b237cafb16dc45038e85df6c85e74e6d899eba9@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler