hwstub: small fixup in rk27xx usb driver

Change-Id: Ibf3b91af11041834ce650f663b213bac0113f721
Rockbox Manual - Gigabeat FX and Fuze+ Touchpad Config Appendix

Added to config_file_options.tex, sections for gigbeat and fuze+
sensitivity settings, also fuze+ touchpad deadzone setting.

Change-Id: I9bba52ca0ca5525e6a6fb337f6940d11571ee06a
Reviewed-on: http://gerrit.rockbox.org/954
Tested: Benjamin Brown <foolshperson@gmail.com>
Reviewed-by: Frank Gevaerts <frank@gevaerts.be>
Ptable: implement up/down, static-ize all data/functions

Change-Id: Ie94d4059630854b2ef74a0e39bbfabb8da47f6e7
Merge branch 'master' into working