dts: r64: add sata- and asm_sel nodes

asm_sel is for switching between sata and pcie mode
on r64 there is GPIO90 connected to ASM1480 which
switches RX/TX pairs to PCIe/SATA connector
output-low means sata-controller is active

with 2020-10 now reg is also needed for the phy itself

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
diff --git a/arch/arm/dts/mt7622-bpi-r64.dts b/arch/arm/dts/mt7622-bpi-r64.dts
index c89e816..51287ce 100644
--- a/arch/arm/dts/mt7622-bpi-r64.dts
+++ b/arch/arm/dts/mt7622-bpi-r64.dts
@@ -235,3 +235,12 @@
 		full-duplex;
 	};
 };
+
+&gpio {
+	/*gpio 90 for setting mode to sata*/
+	asm_sel {
+		gpio-hog;
+		gpios = <90 GPIO_ACTIVE_HIGH>;
+		output-low;
+	};
+};