docs/relnotes: Mark off ARB_direct_state_access for 10.6
docs/relnotes: Mark off ARB_direct_state_access for 10.6

v2: Make it clear that ARB_direct_state_access is only available on
    drivers that support GL 2.0+

Signed-off-by: Fredrik Höglund <f487c7598f046a9a67757788cf85ee89028a1b14@kde.org>
Reviewed-by: Adam Jackson <4482611cc290c2ce1399431891dcb9221c95f994@redhat.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler