Console - Fix compile, add GDISP_NEED_CONSOLE for compilation
VMT - Fix after directory structure changes
BitBlt - Update API to allow a source bitmap position.
Clip - Add clipping support into gdisp
Arc - Allow hardware accelleration of Arc routines
Nokia6610 - Fixes to BitBlt.
Added 7 point median filtering to reduce noise
TOUCHPADDriver structure now encapsulates the IRQ pin, so removed
the TP_CS_ and TP_IRQ_ macros
Added generic tp_lld_read_value method to read any ADC channel from
the XPT2046, this includes on-chip temperature sensor and VBAT input
Improved SPI bus sharing, with the optional TOUCHPAD_SPI_PROLOGUE and
TOUCHPAD_SPI_EPILOGUE macros