dt-bindings: iio: imu: st_lsm6dsx: add asm330lhhx device bindings

Add device bindings for asm330lhhx IMU sensor.
Use lsm6dsr as fallback device for asm330lhhx since it implements all
the features currently supported by asm330lhhx.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/2e5304b7e11085d4e701b4b591fd79cc54f01301.1649100168.git.lorenzo@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml

@@ -14,23 +14,27 @@ description:
 
 properties:
   compatible:
-    enum:
-      - st,lsm6ds3
-      - st,lsm6ds3h
-      - st,lsm6dsl
-      - st,lsm6dsm
-      - st,ism330dlc
-      - st,lsm6dso
-      - st,asm330lhh
-      - st,lsm6dsox
-      - st,lsm6dsr
-      - st,lsm6ds3tr-c
-      - st,ism330dhcx
-      - st,lsm9ds1-imu
-      - st,lsm6ds0
-      - st,lsm6dsrx
-      - st,lsm6dst
-      - st,lsm6dsop
+    oneOf:
+      - enum:
+          - st,lsm6ds3
+          - st,lsm6ds3h
+          - st,lsm6dsl
+          - st,lsm6dsm
+          - st,ism330dlc
+          - st,lsm6dso
+          - st,asm330lhh
+          - st,lsm6dsox
+          - st,lsm6dsr
+          - st,lsm6ds3tr-c
+          - st,ism330dhcx
+          - st,lsm9ds1-imu
+          - st,lsm6ds0
+          - st,lsm6dsrx
+          - st,lsm6dst
+          - st,lsm6dsop
+      - items:
+          - const: st,asm330lhhx
+          - const: st,lsm6dsr
 
   reg:
     maxItems: 1