msm: net: ecm: change printouts syntax

This commit changes the way the driver printout
messages to the dynamic debug mechanism.
The new printout allows to easily debug issues
that involve synchronization issues.
In addition it allows simple switch
from pr_debug to pr_err that comes handy for
boot-up issues.

Change-Id: Iac40040b1507df8ef7d20c48e32152c08cb26a60
Signed-off-by: Talel Atias <tatias@codeaurora.org>