dt-bindings: arm: add TQMa93xxLA SOM

TQMa93xxLA is a SOM variant in the TQ-Systems GmbH TQMa93xx series using
NXP i.MX93 CPU on an LGA type board.
MBa93xxCA is a starterkit base board for TQMa93xxLA on an adapter board.
Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -1219,6 +1219,25 @@ properties:
               - fsl,imxrt1170-evk         # i.MXRT1170 EVK Board
           - const: fsl,imxrt1170
 
+      - description:
+          TQMa93xxLA and TQMa93xxCA are two series of feature compatible SOM
+          using NXP i.MX93 SOC in 11x11 mm package.
+          TQMa93xxLA is designed to be soldered on different carrier boards.
+          TQMa93xxCA is a compatible variant using board to board connectors.
+          All SOM and CPU variants use the same device tree hence only one
+          compatible is needed. Bootloader disables all features not present
+          in the assembled SOC.
+          MBa93xxCA mainboard can be used as starterkit for the SOM
+          soldered on an adapter board or for the connector variant
+          MBa93xxLA mainboard is a single board computer using the solderable
+          SOM variant
+        items:
+          - enum:
+              - tq,imx93-tqma9352-mba93xxca # TQ-Systems GmbH i.MX93 TQMa93xxCA/LA SOM on MBa93xxCA
+              - tq,imx93-tqma9352-mba93xxla # TQ-Systems GmbH i.MX93 TQMa93xxLA SOM on MBa93xxLA SBC
+          - const: tq,imx93-tqma9352        # TQ-Systems GmbH i.MX93 TQMa93xxCA/LA SOM
+          - const: fsl,imx93
+
       - description:
           Freescale Vybrid Platform Device Tree Bindings