arm64: dts: renesas: ulcb-kf: fix wrong comment

Fix comment referencing salvator board, likely a copy-paste leftover.

ulcb-kf.dtsi has nothing to do with salvator.
Signed-off-by: NNikita Yushchenko <nikita.yoush@cogentembedded.com>
Fixes: 80c07701 ("arm64: dts: renesas: ulcb-kf: add pcm3168 sound codec")
Link: https://lore.kernel.org/r/20220216181003.114049-1-nikita.yoush@cogentembedded.comSigned-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/ulcb-kf.dtsi

@@ -414,7 +414,7 @@
 		     &sound_pcm_pins>;
 
 	ports {
-		/* rsnd_port0/1 are on salvator-common */
+		/* rsnd_port0/1 are defined in ulcb.dtsi */
 		rsnd_port2: port@2 {
 			reg = <2>;
 			rsnd_for_pcm3168a_play: endpoint {