[coreboot-gerrit] Change in coreboot[master]: cbfstool: Add dummy vboot callback vb2ex_printf()

[Joel Kitching (Code Review)]

Joel Kitching has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/39390 )

Change subject: cbfstool: Add dummy vboot callback vb2ex_printf()
......................................................................

Patch Set 1:

Since this is a userspace utility, I don't think we need to worry about implementing vprintf ourselves.  There's already one use of stdarg.h's implementation in util/cbfstool/flashmap/kv_pair.c (vsnprintf).