Revert "libafs: remove stray "-v 2" argument to afs_compile_et"

This reverts commit d7082793eedc46d3647d38ffdf5a2b52fadb3cc3

Change-Id: I8ad37f109fc244d198f85c4642dcf1e8eb33a184
Reviewed-on: http://gerrit.openafs.org/11360
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>