dt-bindings: crypto: ccree: add dt bindings for ccree 703

Add device tree bindings associating Arm TrustZone CryptoCell 703 with the
ccree driver.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Documentation/devicetree/bindings/crypto/arm-cryptocell.txt

@@ -3,6 +3,7 @@ Arm TrustZone CryptoCell cryptographic engine
 Required properties:
 - compatible: Should be one of -
    "arm,cryptocell-713-ree"
+   "arm,cryptocell-703-ree"
    "arm,cryptocell-712-ree"
    "arm,cryptocell-710-ree"
    "arm,cryptocell-630p-ree"