intel: Switch the order of the 2x MSAA sample positions

The Vulkan 1.1.82 spec flipped the order to better match D3D.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
(cherry picked from commit a9f7bcfd)