Initial commit for the Sony NWZ linux port

SUPPORTED SERIES:
- NWZ-E450
- NWZ-E460
- NWZ-E470
- NWZ-E580
- NWZ-A10

NOTES:
- bootloader makefile convert an extra font to be installed alongside the bootloader
  since sysfont is way too small
- the toolsicon bitmap comes from the Oxygen iconset
- touchscreen driver is untested

TODO:
- implement audio routing driver (pcm is handled by pcm-alsa)
- fix playback: it crashes on illegal instruction in DEBUG builds
- find out why the browser starts at / instead of /contents
- implement radio support
- implement return to OF for usb handling
- calibrate battery curve (NB: of can report a battery level on a 0-5 scale but
  probabl don't want to use that ?)
- implement simulator build (we need a nice image of the player)
- figure out if we can detect jack removal

POTENTIAL TODOS:
- try to build a usb serial gadget and gdbserver

Change-Id: Ic77d71e0651355d47cc4e423a40fb64a60c69a80

utils/nwztools/scripts/install_dualboot.sh

@@ -36,8 +36,6 @@ exec > "$CONTENTS/install_dualboot_log.txt" 2>&1
 . /install_script/constant.txt
 _UPDATE_FN_=`nvpstr ufn`
 ROOTFS_TMP_DIR=/tmp/rootfs
-ROCKBOX_NAME=Rockbox
-ROCKBOX_PATH=$ROOTFS_TMP_DIR/usr/local/bin/$ROCKBOX_NAME
 SPIDERAPP_PATH=$ROOTFS_TMP_DIR/usr/local/bin/SpiderApp
 
 # mount root partition
@@ -51,7 +49,11 @@ fi
 
 # NOTE some platforms use ext4 with a custom mount program
 # (/usr/local/bin/icx_mount.ext4), some probably use an mtd too
+# try ext3 and if it fails, try ext2
 mount -t ext3 $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
+if [ "$?" != 0 ]; then
+    mount -t ext2 $COMMON_ROOTFS_PARTITION $ROOTFS_TMP_DIR
+fi
 if [ "$?" != 0 ]; then
     lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,15 "ERROR: mount failed"
     sleep 3