dt-bindings: clock: ehrpwm: Add support for AM64 specific compatible

Introduce AM64 specific compatible for epwm time-base sub-module clock.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210528045743.16537-2-lokeshvutla@ti.com
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Tero Kristo <kristo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: lokeshvutla

Documentation/devicetree/bindings/clock/ti,am654-ehrpwm-tbclk.yaml

@@ -12,7 +12,9 @@ maintainers:
 properties:
   compatible:
     items:
-      - const: ti,am654-ehrpwm-tbclk
+      - enum:
+          - ti,am654-ehrpwm-tbclk
+          - ti,am64-epwm-tbclk
       - const: syscon
 
   "#clock-cells":