dt-bindings: media: Remove K3 Family Prefix from Compatible

K3 family prefix is not included in other TI compatible strings. Remove
this prefix to keep naming convention consistent.

Fixes: de4b9f7e371a ("dt-bindings: media: wave5: add yaml devicetree bindings")
Reported-by: Geert Uytterhoeven <[e-mail]>
Closes: https://lore.kernel.org/all/CAMuHMdUYOq=q1j=[e-mail]/
Signed-off-by: Brandon Brnich <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Nishanth Menon <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

Documentation/devicetree/bindings/media/cnm,wave521c.yaml

···
   compatible:
     items:
       - enum:
-          - ti,k3-j721s2-wave521c
+          - ti,j721s2-wave521c
       - const: cnm,wave521c
 
   reg:
···
 examples:
   - |
     vpu: video-codec@12345678 {
-        compatible = "ti,k3-j721s2-wave521c", "cnm,wave521c";
+        compatible = "ti,j721s2-wave521c", "cnm,wave521c";
         reg = <0x12345678 0x1000>;
         clocks = <&clks 42>;
         interrupts = <42>;