anv: provide dummy vkCmdSetPatchControlPointsEXT

anv: provide dummy vkCmdSetPatchControlPointsEXT

This makes dEQP-VK.api.version_check.entry_points pass and matches how
other drivers are handling this case. We do not support the feature but
still need to provide a dummy entrypoint.

v2: throw error if/when called (Jason)

Fixes: 0d031d1da34 ("anv: toggle on VK_EXT_extended_dynamic_state2")
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11503>