anv/state: if enabled, use anisotropic filtering also with VK_FILTER_NEAREST

Fixes multiple Vulkan CTS tests that combine anisotropy and VK_FILTER_NEAREST
in dEQP-VK.texture.filtering_anisotropy.*

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/genX_state.c

@@ -101,7 +101,7 @@ vk_to_gen_tex_filter(VkFilter filter, bool anisotropyEnable)
    default:
       assert(!"Invalid filter");
    case VK_FILTER_NEAREST:
-      return MAPFILTER_NEAREST;
+      return anisotropyEnable ? MAPFILTER_ANISOTROPIC : MAPFILTER_NEAREST;
    case VK_FILTER_LINEAR:
       return anisotropyEnable ? MAPFILTER_ANISOTROPIC : MAPFILTER_LINEAR;
    }