mesa: Advertise NV_draw_buffers in OpenGL ES 2.0

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/main/extensions.c

@@ -284,6 +284,7 @@ static const struct extension extension_table[] = {
    { "GL_NV_blend_square",                         o(NV_blend_square),                         GL,             1999 },
    { "GL_NV_conditional_render",                   o(NV_conditional_render),                   GL,             2008 },
    { "GL_NV_depth_clamp",                          o(ARB_depth_clamp),                         GL,             2001 },
+   { "GL_NV_draw_buffers",                         o(ARB_draw_buffers),                                   ES2, 2011 },
    { "GL_NV_fragment_program",                     o(NV_fragment_program),                     GL,             2001 },
    { "GL_NV_fragment_program_option",              o(NV_fragment_program_option),              GL,             2005 },
    { "GL_NV_light_max_exponent",                   o(NV_light_max_exponent),                   GL,             1999 },