spi: dt-binding: add coreqspi as a fallback for mpfs-qspi

Microchip's PolarFire SoC QSPI IP core is based on coreQSPI,
so add coreqspi as a fallback to mpfs-qspi.
Signed-off-by: NNaga Sureshkumar Relli <nagasuresh.relli@microchip.com>
Reviewed-by: NConor Dooley <conor.dooley@microchip.com>
Acked-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220808064603.1174906-3-nagasuresh.relli@microchip.comSigned-off-by: NMark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml

@@ -18,10 +18,12 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - microchip,mpfs-spi
-      - microchip,mpfs-qspi
-      - microchip,coreqspi-rtl-v2 # FPGA QSPI
+    oneOf:
+      - items:
+          - const: microchip,mpfs-qspi
+          - const: microchip,coreqspi-rtl-v2
+      - const: microchip,coreqspi-rtl-v2 #FPGA QSPI
+      - const: microchip,mpfs-spi
 
   reg:
     maxItems: 1