zink: fix detection of KHR_maintenance1/2

Since some extensions never got their dedicated feature structs, not all
extensions promoted to core Vulkan have the relevant feature bits in
`VkPhysicalDeviceVulkanXYFeatures`. Those extensions are supported by
the device when the device version is high enough.

For those extensions, set the screen flags directly if the device
version is sufficient, otherwise check for the extension as usual.

Fixes: efe6f00e ("zink/codegen: do not enable extensions that are now core")
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9030>

src/gallium/drivers/zink/zink_device_info.py

@@ -270,6 +270,10 @@ zink_get_physical_device_info(struct zink_screen *screen)
                if (!strcmp(extensions[i].extensionName, "${ext.name}")) {
                   support_${ext.name_with_vendor()} = true;
                }
+        %if not (ext.has_features or ext.has_properties):
+            } else {
+               info->have_${ext.name_with_vendor()} = true;
+        %endif
             }
          %endif
          %endfor
@@ -359,7 +363,7 @@ zink_get_physical_device_info(struct zink_screen *screen)
             conditions += "&& (" + cond + ")\\n"
     conditions = conditions.strip()
 %>\
-      info->have_${ext.name_with_vendor()} = support_${ext.name_with_vendor()}
+      info->have_${ext.name_with_vendor()} |= support_${ext.name_with_vendor()}
          ${conditions};
 </%helpers:guard>
         %endfor