Add cleaned-up xDuoo X3 support

Cleaned up, rebased, and forward-ported from the xvortex fork.

(original credit to vsoftster@gmail.com)

Change-Id: Ibcc023a0271ea81e901450a88317708c2683236d
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>

tools/configure

@@ -1535,6 +1535,8 @@ cat <<EOF
  232) DX50                240) Rocker            227) NW-A20 series
  233) DX90                                       228) NWZ-A860 series
                                                  229) NWZ-S750 series
+ ==xDuoo==
+ 241) X3
 EOF
 
   buildfor=`input`;
@@ -4215,6 +4217,28 @@ fi
     mipsellinuxcc
     ;;
 
+    241|xduoox3)
+    target_id=106
+    modelname="xduoox3"
+    target="XDUOO_X3"
+    memory=64
+    mipselcc
+    tool="$rootdir/tools/scramble -add=xdx3"
+    bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
+    bmp2rb_native="$bmp2rb_mono"
+    output="rockbox.x3"
+    appextra="recorder:gui:radio"
+    plugins="yes"
+    swcodec="yes"
+    toolset=$genericbitmaptools
+    boottool="cp"
+    bootoutput="bootloader-x3.bin"
+    # architecture, manufacturer and model for the target-tree build
+    t_cpu="mips"
+    t_manufacturer="ingenic_jz47xx"
+    t_model="xduoo_x3"
+    ;;
+
    *)
     echo "Please select a supported target platform!"
     exit 7