Added experimental DMA2D driver (WIP)
Removed backup file
Added DMA2D mode selection
Added DMA2D debug checks switch option
More DMA2D readiness checks
Unified DMA2D waits
Improved DMA2D wait API
Removed DMA2D wait functions
ILI9341 can be used with CCM
Improved ILI9341 driver
Added segmented linker script
DMA2D IRQ handlers activated, minor changes
Merge branch 'ltdc' into dma2d
Fixed issues with ".sdram" section trying to load
Added missing ILI9341 mutex/sem initialization
Merge branch 'ltdc' into dma2d

Conflicts:
	demos/ARMCM4-STM32F429-DISCOVERY-SDRAM/ili9341.c
Merge branch 'ltdc' into dma2d
Merge branch 'ltdc' into dma2d
DMA2D demo compiling again
Working DMA2D demo