i2c: Add submissions queue/completion queue bind

To enable per peripheral queue pool sizing options add some bindings to
the i2c controller to setup sq/cq pool sizing.

Its possible this could go away with a shared application pair of pools.

The shared pool would require some added function pointers though to
deal with the variants as the shared pools would need a lock.

Signed-off-by: Tom Burdick <thomas.burdick@intel.com>

dts/bindings/i2c/i2c-controller.yaml

@@ -17,3 +17,11 @@ properties:
   clock-frequency:
     type: int
     description: Initial clock frequency in Hz
+  sq-size:
+    type: int
+    default: 4
+    description: Size of the submission queue for blocking requests
+  cq-size:
+    type: int
+    default: 4
+    description: Size of the completion queue for blocking requests