panvk: rework how we deal with extension-reqs

We're currently exposing a bunch of extensions that requiring Vulkan
1.1, and we'll soon enough do the same for Vulkan 1.2. Instead of having
to update each of these extensions separately once we add new Vulkan
version support for some gens, let's use a single variable for this
instead.

And while we *could* query the exposed vulkan version and do this a bit
more "automatically", this makes it easy to leave some needless checks
behind if the baseline version changes. Leaving this as a arch check in
this function should make it a bit more obvious when the check can be
removed.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <!33971>

src/panfrost/vulkan/panvk_physical_device.c

@@ -176,6 +176,8 @@ get_device_extensions(const struct panvk_physical_device *device,
 {
    const unsigned arch = pan_arch(device->kmod.props.gpu_prod_id);
 
+   bool has_vk1_1 = arch >= 10;
+
    *ext = (struct vk_device_extension_table){
       .KHR_8bit_storage = true,
       .KHR_16bit_storage = true,
@@ -215,13 +217,13 @@ get_device_extensions(const struct panvk_physical_device *device,
       .KHR_shader_draw_parameters = true,
       .KHR_shader_expect_assume = true,
       .KHR_shader_float16_int8 = true,
-      .KHR_shader_maximal_reconvergence = arch >= 10, /* requires vk1.1 */
+      .KHR_shader_maximal_reconvergence = has_vk1_1,
       .KHR_shader_non_semantic_info = true,
-      .KHR_shader_quad_control = arch >= 10, /* requires vk1.1 */
+      .KHR_shader_quad_control = has_vk1_1,
       .KHR_shader_relaxed_extended_instruction = true,
-      .KHR_shader_subgroup_extended_types = arch >= 10, /* requires v1.1 */
+      .KHR_shader_subgroup_extended_types = has_vk1_1,
       .KHR_shader_subgroup_rotate = true,
-      .KHR_shader_subgroup_uniform_control_flow = arch >= 10, /* requires vk1.1 */
+      .KHR_shader_subgroup_uniform_control_flow = has_vk1_1,
       .KHR_storage_buffer_storage_class = true,
 #ifdef PANVK_USE_WSI_PLATFORM
       .KHR_swapchain = true,
@@ -257,7 +259,7 @@ get_device_extensions(const struct panvk_physical_device *device,
       .EXT_scalar_block_layout = true,
       .EXT_separate_stencil_usage = true,
       .EXT_shader_module_identifier = true,
-      .EXT_subgroup_size_control = arch >= 10, /* requires vk1.1 */
+      .EXT_subgroup_size_control = has_vk1_1,
       .EXT_tooling_info = true,
       .EXT_ycbcr_2plane_444_formats = arch >= 10,
       .EXT_ycbcr_image_arrays = arch >= 10,