dt-bindings: mailbox: tegra-hsp: Properly sort compatible string list

Device tree maintainers prefer all single entry cases to be grouped
under an enum. Furthermore, alphanumeric ordering is easier for the
majority of people to understand than ordering by release, which is
quirky.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250506133118.1011777-4-thierry.reding@gmail.com
Signed-off-by: Thierry Reding <treding@nvidia.com>

Author: thierryreding

Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.yaml

@@ -64,9 +64,10 @@ properties:
 
   compatible:
     oneOf:
-      - const: nvidia,tegra186-hsp
-      - const: nvidia,tegra194-hsp
-      - const: nvidia,tegra264-hsp
+      - enum:
+          - nvidia,tegra186-hsp
+          - nvidia,tegra194-hsp
+          - nvidia,tegra264-hsp
       - items:
           - const: nvidia,tegra234-hsp
           - const: nvidia,tegra194-hsp