[PATCH] dt-bindings: iio: bmc150_magn: Document missing compatibles

[Krzysztof Kozlowski]

The driver supports also BMC156B and BMM150B so document the compatibles
for these devices.

Fixes: 9d75db36df14 ("iio: magn: Add support for BMM150 magnetometer")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

---

The fixes tag is not accurate but at least offer some backporting.
---
 .../devicetree/bindings/iio/magnetometer/bmc150_magn.txt     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iio/magnetometer/bmc150_magn.txt b/Documentation/devicetree/bindings/iio/magnetometer/bmc150_magn.txt
index fd5fca90fb39..7469073022db 100644
--- a/Documentation/devicetree/bindings/iio/magnetometer/bmc150_magn.txt
+++ b/Documentation/devicetree/bindings/iio/magnetometer/bmc150_magn.txt
@@ -4,7 +4,10 @@ http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS00
 
 Required properties:
 
-  - compatible : should be "bosch,bmc150_magn"
+  - compatible : should be one of:
+                 "bosch,bmc150_magn"
+                 "bosch,bmc156_magn"
+                 "bosch,bmm150_magn"
   - reg : the I2C address of the magnetometer
 
 Optional properties:
-- 
2.17.1