nvk: Advertise VK_EXT_legacy_vertex_attributes

Signed-off-by: Valentine Burley <valentine.burley@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30817>

docs/features.txt

@@ -599,7 +599,7 @@ Khronos extensions that are not part of any Vulkan version:
   VK_EXT_image_sliced_view_of_3d                        DONE (anv, nvk, radv/gfx10+)
   VK_EXT_image_view_min_lod                             DONE (anv, hasvk, nvk, radv, tu, vn)
   VK_EXT_index_type_uint8                               DONE (anv, hasvk, nvk, lvp, panvk, pvr, radv/gfx8+, tu, v3dv, vn)
-  VK_EXT_legacy_vertex_attributes                       DONE (anv, lvp, radv, tu)
+  VK_EXT_legacy_vertex_attributes                       DONE (anv, lvp, nvk, radv, tu)
   VK_EXT_line_rasterization                             DONE (anv, hasvk, nvk, lvp, radv, tu, v3dv, vn)
   VK_EXT_load_store_op_none                             DONE (anv, nvk, radv, tu, v3dv, vn)
   VK_EXT_memory_budget                                  DONE (anv, hasvk, lvp, nvk, pvr, radv, tu, v3dv, vn)

docs/relnotes/new_features.txt

@@ -2,3 +2,4 @@ Expose Vulkan 1.3 on v3dv, both rpi4 and rpi5
 VK_EXT_descriptor_buffer on nvk
 VK_EXT_post_depth_coverage on nvk
 VK_KHR_video_maintenance1 on radv
+VK_EXT_legacy_vertex_attributes on nvk

src/nouveau/vulkan/nvk_physical_device.c

@@ -203,6 +203,7 @@ nvk_get_device_extensions(const struct nvk_instance *instance,
       .EXT_image_view_min_lod = true,
       .EXT_index_type_uint8 = true,
       .EXT_inline_uniform_block = true,
+      .EXT_legacy_vertex_attributes = true,
       .EXT_line_rasterization = true,
       .EXT_load_store_op_none = true,
       .EXT_map_memory_placed = true,
@@ -557,6 +558,9 @@ nvk_get_device_features(const struct nv_device_info *info,
       /* VK_EXT_image_view_min_lod */
       .minLod = true,
 
+      /* VK_EXT_legacy_vertex_attributes */
+      .legacyVertexAttributes = true,
+
       /* VK_EXT_map_memory_placed */
       .memoryMapPlaced = true,
       .memoryMapRangePlaced = false,
@@ -956,6 +960,9 @@ nvk_get_device_properties(const struct nvk_instance *instance,
       .maxCombinedImageSamplerDescriptorCount = 3,
       .fragmentShadingRateClampCombinerInputs = false, /* TODO */
 
+      /* VK_EXT_legacy_vertex_attributes */
+      .nativeUnalignedPerformance = true,
+
       /* VK_EXT_map_memory_placed */
       .minPlacedMemoryMapAlignment = os_page_size,