[PATCH] metainfo: Add custom key "GnomeSoftware::requires-akmods-key"

This is related to a gnome-software change [1] and it had been mentioned
at [2] as well. The updated gnome-software will provide special functionality
in systems with Secure Boot enabled, it'll ensure the akmods key is ready
in the UEFI, thus any drivers using akmods and signed by this akmods key
will be used by the kernel.

[1] https://gitlab.gnome.org/GNOME/gnome-software/-/merge_requests/2034
[2] https://bugzilla.rpmfusion.org/show_bug.cgi?id=6976

xorg-x11-drv-nvidia.metainfo.xml

@@ -46,4 +46,7 @@
   </keywords>
   <url type="bugtracker">https://bugzilla.rpmfusion.org</url>
   <update_contact>xorg-x11-drv-nvidia-owner@rpmfusion.org</update_contact>
+  <custom>
+    <value key="GnomeSoftware::requires-akmods-key">True</value>
+  </custom>
 </component>