i965: Enable ARB_vertex_type_10f_11f_11f_rev on Gen6+.

This theoretically works on earlier hardware as well, but the extension
requires at least GL3.0.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Eric Anholt <eric@anholt.net>

src/mesa/drivers/dri/i965/intel_extensions.c

@@ -210,6 +210,7 @@ intelInitExtensions(struct gl_context *ctx)
       ctx->Extensions.ARB_shading_language_packing = true;
       ctx->Extensions.ARB_texture_multisample = true;
       ctx->Extensions.ARB_sample_shading = true;
+      ctx->Extensions.ARB_vertex_type_10f_11f_11f_rev = true;
 
       /* Test if the kernel has the ioctl. */
       if (drm_intel_reg_read(brw->bufmgr, TIMESTAMP, &dummy) == 0)