arm: dts: rmobile: r8a774a1: Synchronize DTs with Linux 5.10

DTS files apart from r8a774a1-hihope-rzg2m-u-boot.dts and
r8a774a1-u-boot.dtsi have been imported from linux 5.10
commit 2c85ebc57b3e1817 ("Linux 5.10").

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
diff --git a/arch/arm/dts/r8a774a1-hihope-rzg2m-u-boot.dts b/arch/arm/dts/r8a774a1-hihope-rzg2m-u-boot.dts
new file mode 100644
index 0000000..b735e97
--- /dev/null
+++ b/arch/arm/dts/r8a774a1-hihope-rzg2m-u-boot.dts
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source extras for U-Boot for the Hihope RZ/G2M board
+ *
+ * Copyright (C) 2021 Renesas Electronics Corporation
+ */
+
+#include "r8a774a1-hihope-rzg2m-ex.dts"
+#include "r8a774a1-u-boot.dtsi"
+
+&gpio3 {
+	bt_reg_on{
+		gpio-hog;
+		gpios = <13 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "bt-reg-on";
+	};
+};
+
+&gpio4 {
+	wlan_reg_on{
+		gpio-hog;
+		gpios = <6 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "wlan-reg-on";
+	};
+};