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/database/gen_db.py

@@ -200,7 +200,7 @@ extern struct nwz_series_info_t nwz_series[NWZ_SERIES_COUNT];
 #endif /* __NWZ_DB_H__ */
 """
 
-with open("nwz_db.h", "w") as fp:
+with open("nwz-db.h", "w") as fp:
     fp.write(header_begin)
     # generate list of all nvp nodes
     for name in sorted(g_nvp_names):
@@ -241,7 +241,7 @@ impl_begin = \
 
 /** /!\ This file was automatically generated, DO NOT MODIFY IT DIRECTLY /!\ */
 
-#include "nwz_db.h"
+#include "nwz-db.h"
 
 struct nwz_model_info_t nwz_model[NWZ_MODEL_COUNT] =
 {
@@ -256,7 +256,7 @@ def by_name(nvp_entry):
 def codename_to_c(codename):
     return re.sub('[^a-zA-Z0-9]', '_', codename, 0)
 
-with open("nwz_db.c", "w") as fp:
+with open("nwz-db.c", "w") as fp:
     fp.write(impl_begin)
     # generate model list (sort by mid)
     for model in sorted(g_models, key = by_mid):