[PATCH V4 4/9] dt-bindings: spi: fsl-lpspi: Add imx8ulp compatible string

["Peng Fan (OSS)" <peng.fan@xxxxxxxxxxx>]

From: Jacky Bai <ping.bai@xxxxxxx>

The lpspi on i.MX8ULP is derived from i.MX7ULP, it uses two
compatible strings, so update the comaptible string for i.MX8ULP.

Signed-off-by: Jacky Bai <ping.bai@xxxxxxx>
Reviewed-by: Dong Aisheng <aisheng.dong@xxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
---
 .../devicetree/bindings/spi/spi-fsl-lpspi.yaml        | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
index 312d8fee9dbb..1d46877fe46a 100644
--- a/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-lpspi.yaml
@@ -14,10 +14,13 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - fsl,imx7ulp-spi
-      - fsl,imx8qxp-spi
-
+    oneOf:
+      - enum:
+          - fsl,imx7ulp-spi
+          - fsl,imx8qxp-spi
+      - items:
+          - const: fsl,imx8ulp-spi
+          - const: fsl,imx7ulp-spi
   reg:
     maxItems: 1
 
-- 
2.25.1