dt-bindings: Add DT bindings for ccree 710 and 630p

Add device tree bindings for Arm CryptoCell 710 and 630p hardware
revisions.
Signed-off-by: NGilad Ben-Yossef <gilad@benyossef.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

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

 Arm TrustZone CryptoCell cryptographic engine
 
 Required properties:
-- compatible: Should be "arm,cryptocell-712-ree".
+- compatible: Should be one of: "arm,cryptocell-712-ree",
+  "arm,cryptocell-710-ree" or "arm,cryptocell-630p-ree".
 - reg: Base physical address of the engine and length of memory mapped region.
 - interrupts: Interrupt number for the device.