Add compatible string for i.MX91 9x9 Quick Start Board.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
Changes in v2:
1. add Reviewed-by and Acked-by tag.
---
 Documentation/devicetree/bindings/arm/fsl.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index da2be7114f6417317b3bc904cc5c1953e64e21ea..6a94e0201f704f87df8b5bae0fcae9b2d9133f91 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml
@@ -1458,6 +1458,7 @@ properties:
       - description: i.MX91 based Boards
         items:
           - enum:
+              - fsl,imx91-9x9-qsb         # i.MX91 9x9 QSB Board
               - fsl,imx91-11x11-evk       # i.MX91 11x11 EVK Board
               - fsl,imx91-11x11-frdm      # FRDM i.MX91 Development Board
               - fsl,imx91-11x11-frdm-s    # FRDM i.MX91S Development Board

-- 
2.37.1