Makefile/cmake/Tools: add easy Snapdragon upload

This adds a a target `make eagle_default` to build both the POSIX and
the QURT side in one command. Also, it adds an upload target for both to
push the files over adb to the device. This doesn't just push the
executables and lib files, but also the startup config files.

Tools/adb_upload.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+if [[ "$#" < 2 ]]; then
+	echo "usage: adb_upload.sh SRC1 [SRC2 ...] DEST"
+	exit
+fi
+
+echo "Wait for device..."
+adb wait-for-device
+echo "Uploading..."
+
+# Get last argument
+for last; do true; done
+
+# Go through source files and push them one by one.
+i=0
+for arg
+do
+	if [[ $((i+1)) == "$#" ]]; then
+		break
+	fi
+	# echo "Pushing $arg to $last"
+	adb push $arg $last
+	((i+=1))
+done