Improvements for synchronous reads & Balance Board

- Implemented timeouts on synchronous reads, retry operation on timeout
- Balance Board init based on http://wiibrew.org/wiki/Wii_Balance_Board#Wii_Initialisation_Sequence
Hack to mute the excessive report 0x30 spam from some 3rdparty Balance Boards
Added error messages on incorrect use
Print more debug info for the Balance Board