Implementation of rpi2c driver, cannot be loaded as a module due tu FIQ requirements.
Also diabling clock stretching timeout in existing bcm2708 driver for I2C
Proper compile time disabling of FIQ fix in dwc_otg driver because fiq_fix_enabled did not do job properly
Also there was a fix from internet in dwc_otg_hcd_intr.c to avoid hangs if fiq_fix is disabled (clearing of interrupts was commented out!!!)
adding missing files from prev commit