Fix RPi2 build system

Tools/scp_upload.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+if [[ "$#" < 2 ]]; then
+	echo "usage: scp_upload.sh SRC1 [SRC2 ...] DEST"
+	exit
+fi
+
+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
+	scp $arg pi@px4autopilot:$last
+	((i+=1))
+done