Kientis:edma Cleanup
Kinetis:EDMA Interrupt on last TCD
Kintis:edma remove dcache operations on passed data
Data can be chained in TCD and both read and write
can be in the chain. So the dmach ttype is not
relevent for all; the TCDs. Therefor we only perform
dcache operations on internal strutures, The caller
must perform dcache operations on their data.
kinetis:EDMA TCD Alignment of 32 Bytes to support Scatter/Gather