arm64: dts: rockchip: rk3588/rk3588s boards: prepare bt sco settings

we don't directly add all evb board to enable bt-sco cards
because it may take some i2s/pcm, which may use dma,
but dmas may limit.

so we just prepare this settings, then if any one who want to
support bt-sco, he/she can just add dts in board-level dts.

now, we enable rk3588-evb1 sco just for example.
Diff in "rk3588-evb1-lp4-v10.dts" is like this:

+&bt_sco {
+	status = "okay";
+};
+
+&bt_sound {
+	status = "okay";
+};
+
+&i2s2_2ch {
+	status = "okay";
+};

The default pcm/i2s setting is:
Format: PCM, dsp_a, MSB first, short sync, rising edge and delay 1 bclk.
rockchip soc: master; Bt controller: slave

Change-Id: Id161dd43ec3ea657e758852f7214727488633977
Signed-off-by: Zou Dengming <marsow.zou@rock-chips.com>

arch/arm64/boot/dts/rockchip/rk3588s-tablet.dtsi

@@ -82,6 +82,27 @@
 		charge-full-design-microamp-hours = <4500000>;
 	};
 
+	bt_sco: bt-sco {
+		status = "disabled";
+		compatible = "delta,dfbmcs320";
+		#sound-dai-cells = <0>;
+	};
+
+	bt_sound: bt-sound {
+		status = "disabled";
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "dsp_a";
+		simple-audio-card,bitclock-inversion = <0>;
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,name = "rockchip,bt";
+		simple-audio-card,cpu {
+			sound-dai = <&i2s2_2ch>;
+		};
+		simple-audio-card,codec {
+			sound-dai = <&bt_sco>;
+		};
+	};
+
 	charge-animation {
 		compatible = "rockchip,uboot-charge";
 		rockchip,uboot-charge-on = <1>;
@@ -810,6 +831,12 @@
 		     &i2s0_sdo0>;
 };
 
+&i2s2_2ch {
+	pinctrl-0 = <&i2s2m1_lrck &i2s2m1_sclk &i2s2m1_sdi &i2s2m1_sdo>;
+	rockchip,bclk-fs = <32>;
+	status = "disabled";
+};
+
 &iep {
 	status = "okay";
 };