dt-bindings: spi: Add compatible for Mediatek MT8195

This commit adds dt-binding documentation of spi nor for Mediatek MT8195 SoC
Platform.
Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Link: https://lore.kernel.org/r/20210316111443.3332-6-seiya.wang@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml

@@ -31,6 +31,7 @@ properties:
               - mediatek,mt7623-nor
               - mediatek,mt7629-nor
               - mediatek,mt8192-nor
+              - mediatek,mt8195-nor
           - enum:
               - mediatek,mt8173-nor
       - items: