arm64: dts: rockchip: Add i2s0-2ch-bus-bclk-off pins to RK3399

Commit 0efaf807 ("arm64: dts: rockchip: add i2s0-2ch-bus pins on
rk3399") introduced a pinctl for i2s0 in two-channel mode. Commit
91419ae0 ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399")
modified i2s0 to switch the corresponding pins off when idle.

Although an idle pinctrl node was added for i2s0 in 8-channel mode, a
similar idle pinctrl node for i2s0 in 2-channel mode was not added. Add
it.

Fixes: 91419ae0 ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399")
Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
Link: https://lore.kernel.org/r/20231013114737.494410-2-chris.obbard@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399.dtsi

@@ -2457,6 +2457,16 @@ i2s0_2ch_bus: i2s0-2ch-bus {
 					<4 RK_PA0 1 &pcfg_pull_none>;
 			};
 
+			i2s0_2ch_bus_bclk_off: i2s0-2ch-bus-bclk-off {
+				rockchip,pins =
+					<3 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>,
+					<3 RK_PD1 1 &pcfg_pull_none>,
+					<3 RK_PD2 1 &pcfg_pull_none>,
+					<3 RK_PD3 1 &pcfg_pull_none>,
+					<3 RK_PD7 1 &pcfg_pull_none>,
+					<4 RK_PA0 1 &pcfg_pull_none>;
+			};
+
 			i2s0_8ch_bus: i2s0-8ch-bus {
 				rockchip,pins =
 					<3 RK_PD0 1 &pcfg_pull_none>,