Almost all of the serial drivers have been converted as at January 2016. These
ones remain:
- arm_dcc.c
- mcfuart.c
serial_bfin.c
serial_pxa.c
- serial_s3c24x0.c
The deadline for this work was the end of January 2016. If no one steps
forward to convert these, at some point there may come a patch to remove them!