New Port: Eros Q Native

What works:
- LCD: 16-bit RGB565
- all buttons, including scrollwheel
- SD Card
- Battery level and charging/not charging status
- USB
- audio
- sample rate switching
- HP / LO detect, with "safe" fixed LO volume -
   LO volume will only be put to user-defined max volume
   if headphones are not present.
- rtc
- Plugins build, tried a couple and they seem OK
- Bootloader, installable to nand via usbboot

What doesn't work:
- Dual Boot
- power on/off has intermittent, low volume audio click
   (sometimes it's completely silent, sometimes there's
    a click)
- Audio uses 16-bit volume scaling, so clicking/popping
   is pretty bad at lower volumes - need 32 bit volume
   scaling, 24 bit I2S data
- USB HID keys not yet defined
- no jztool support

Unknowns:
- Stereo Switch pins: Direction select, AC_DC
   (probably not even hooked up)
- What is the actual purpose of the Stereo Swtich?
- How does the bluetooth module connect?

"Someday" stuff:
- get LCD working at higher bit depth
- Bluetooth

Change-Id: I70dda8fc092c6e3f4352f2245e4164193f803c33

tools/configure

@@ -1598,7 +1598,7 @@ cat <<EOF
                           ==FiiO==               229) NWZ-S750 series
  ==AIGO==                 244) M3K Linux
  245) Eros Q / K          246) M3K baremetal     ==Shanling==
-                                                 260) Q1
+ 247) Eros Q / K native                          260) Q1
 EOF
 
   buildfor=`input`;
@@ -4133,6 +4133,30 @@ fi
     t_model="shanlingq1"
     ;;
 
+    247|erosqnative)
+    target_id=116
+    modelname="erosqnative"
+    target="EROS_QN"
+    memory=32
+    mipsr2elcc
+    appextra="recorder:gui"
+    plugins="yes"
+    tool="$rootdir/tools/scramble -add=erosqnative "
+    boottool="" # not used
+    output="rockbox.erosq"
+    bootoutput="bootloader.erosq"
+    sysfontbl="16-Terminus"
+    # toolset is the tools within the tools directory that we build for
+    # this particular target.
+    toolset="$x1000tools"
+    bmp2rb_mono="$rootdir/tools/bmp2rb -f 0"
+    bmp2rb_native="$rootdir/tools/bmp2rb -f 4"
+    # architecture, manufacturer and model for the target-tree build
+    t_cpu="mips"
+    t_manufacturer="ingenic_x1000"
+    t_model="erosqnative"
+    ;;
+
    *)
     echo "Please select a supported target platform!"
     exit 7