fedma version 22011700
NOTE: for RM5 firmware only.
Set and/or read the DMA controller index for (ToHost) e-links,
a setting per e-path (i.e. e-link).
Without a DMA index provided the current setting(s) of the selected e-link(s)
is (are) displayed.

Usage: fedma [-h|V] [-d <devnr>] [-e <elink>]
             [-G <gbt> [-g <group>] [-p <path>]] [<dma>]
  -h         : Show this help text.
  -V         : Show version.
  -d <devnr> : FLX-device to use (default: 0).
  -e <elink> : E-link number (hex) or use -G/g/p options.
  -G <gbt>   : GBT-link number (default: all links).
  -g <group> : Group number (default: all groups).
  -p <path>  : E-path number (default: all paths).
  <dma>      : DMA index to set for the selected E-link(s).
