arm64: dts: renesas: beacon: Fix audio-1.8V pin enable

stable inclusion
from stable-5.10.20
commit fcb4513817251fb2e11069e98ea15c7aff7927bf
bugzilla: 50608

--------------------------------

[ Upstream commit 5a5da0b7 ]

The fact the audio worked at all was a coincidence because the wrong
gpio enable was used.  Use the correct GPIO pin to ensure its operation.

Fixes: a1d8a344 ("arm64: dts: renesas: Introduce r8a774a1-beacon-rzg2m-kit")
Signed-off-by: NAdam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20201213183759.223246-6-aford173@gmail.comSigned-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi

@@ -150,7 +150,7 @@
 		regulator-name = "audio-1.8V";
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <1800000>;
-		gpio = <&gpio_exp2 7 GPIO_ACTIVE_HIGH>;
+		gpio = <&gpio_exp4 1 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};