dt-bindings: arm: mediatek: add BPI-R4 Pro board

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>

Author: frank-w

Documentation/devicetree/bindings/arm/mediatek.yaml

@@ -108,13 +108,17 @@ properties:
       - items:
           - enum:
               - bananapi,bpi-r4
-              - bananapi,bpi-r4-pro-4e
-              - bananapi,bpi-r4-pro-8x
           - const: mediatek,mt7988a
       - items:
           - const: bananapi,bpi-r4-2g5
           - const: bananapi,bpi-r4
           - const: mediatek,mt7988a
+      - items:
+          - enum:
+              - bananapi,bpi-r4-pro-4e
+              - bananapi,bpi-r4-pro-8x
+          - const: bananapi,bpi-r4-pro
+          - const: mediatek,mt7988a
       - items:
           - enum:
               - mediatek,mt8127-moose