anv: Pull the API version from anv_extensions.py

This way everything stays in sync and we only have the one version
number.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>

src/intel/vulkan/anv_device.c

@@ -794,7 +794,7 @@ void anv_GetPhysicalDeviceProperties(
    };
 
    *pProperties = (VkPhysicalDeviceProperties) {
-      .apiVersion = VK_MAKE_VERSION(1, 0, 54),
+      .apiVersion = anv_physical_device_api_version(pdevice),
       .driverVersion = vk_get_driver_version(),
       .vendorID = 0x8086,
       .deviceID = pdevice->chipset_id,