no printf in drivers code

[Thomas Monjalon]

03/02/2023 17:18, Honnappa Nagarahalli:
> From: Thomas Monjalon <thomas at monjalon.net>
> > 
> > We have too many drivers using printf() instead of rte_log().
> > Please propose a plan to replace or remove the calls to printf().
> > If no plan, I could propose one but you may not like it :)
> 
> Does it make sense to add scripts to CI to capture this issue?
> In general, we do not want printfs in DPDK code (other than tests, sample apps?)

It's difficult to automate because printfs are acceptable
in dump functions, selftest, and testpmd code hosted in drivers directories.