samples: net: aws_iot_mqtt: support Pinnacle 100 with HL78xx driver

Add support for using the HL78XX modem driver with Pinnacle 100
modem boards.

Signed-off-by: Ryan Erickson <[email protected]>

Author: rerickson1

samples/net/cloud/aws_iot_mqtt/overlay-pinnacle_100-hl78xx.conf

@@ -0,0 +1,4 @@
+CONFIG_MODEM_HL7800=n
+CONFIG_UART_ASYNC_API=y
+CONFIG_MODEM_HL78XX=y
+CONFIG_MODEM_HL78XX_AUTORAT=n

samples/net/cloud/aws_iot_mqtt/pinnacle_100-hl78xx.overlay

@@ -0,0 +1,36 @@
+/delete-node/ &hl7800;
+
+/ {
+	aliases {
+		modem-uart = &uart1;
+		modem = &hl7800;
+		gnss = &gnss;
+	};
+};
+
+&uart1 {
+	hl7800: hl7800 {
+		compatible = "swir,hl7800";
+		status = "okay";
+		mdm-reset-gpios = <&gpio1 15 (GPIO_OPEN_DRAIN | GPIO_ACTIVE_LOW)>;
+		mdm-wake-gpios = <&gpio1 13 (GPIO_OPEN_SOURCE | GPIO_ACTIVE_HIGH)>;
+		mdm-pwr-on-gpios = <&gpio1 2 (GPIO_OPEN_DRAIN | GPIO_ACTIVE_LOW)>;
+		mdm-fast-shutd-gpios = <&gpio1 14 (GPIO_OPEN_DRAIN | GPIO_ACTIVE_LOW)>;
+		mdm-vgpio-gpios = <&gpio1 11 0>;
+		mdm-uart-dsr-gpios = <&gpio0 25 0>;
+		mdm-uart-cts-gpios = <&gpio0 15 0>;
+		mdm-gpio6-gpios = <&gpio1 12 0>;
+		socket_offload: socket_offload {
+			compatible = "swir,hl7812-offload";
+			status = "okay";
+			/* optional properties for future: */
+			max-data-length = <512>;
+		};
+		gnss: hl_gnss {
+			compatible = "swir,hl7812-gnss";
+			pps-mode = "GNSS_PPS_MODE_DISABLED";
+			fix-rate = <1000>;
+			status = "disabled";
+		};
+	};
+};