Enhance the stm32_dmacapable implementation to give correct answers.
Fix the Kconfig configuration for the STM32 SDIO DMA priority option.
Teach the STM32 SDIO driver how to determine whether a transfer can be performed safely using DMA.
Teach the MMC layer to handle errors reported during DMA setup.
Teach the FAT filesystem how to deal with I/Os that can't be handled due to DMA non-conformability.
Fix DMA channel definitions for UART7/8
Add an explicit preflight call for SDIO DMA operations, since we can't error out of the DMA setup (the card is already committed at that point).
SAMA5 EHCI:  Did not work with DEBUG off.  Appears to be because of some D-Cache flushing that was performed only with DEBUG ON.  Now is unconditional
Fix a reference counting error in the USB host mass storage class
SAMA5:  Add tracing support to the OHCI driver
Clean-up a few USB trace formats
SAMA5D3x-EK demo configuration now supports HSMCI0 and HSMCI1
SAMA5: TWI register definition file
SAMA5: Framework for a TWI driver (incomplete)
Missed de-optioning the DMA preflight check.
SAMA5:  Barebones TWI driver implementation
SAMA5 TWI:  Add support for I2C readwrite and transfer methods
Cleanup some compilation warnings in NXFFS
Add support for the AT 24C512 EEPROM
SAMA5 TWI:  Cleanup compilation errors that occur when I2C debug is enabled