[feature] add function to print dma

Same as the others.
6 jobs for printf in 3 minutes and 15 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Style
passed #57878
nix kvm
checkpatch

00:00:15

passed #57877
nix kvm
repoquality

00:00:02

passed #57879
nix kvm
style:docs

00:00:26

 
  Build
passed #57880
nix kvm
make:generic

00:00:43

passed #57882
knl
make:knl

00:02:48

passed #57881
nix kvm
make:out-of-tree

00:00:41