Adapt CLI to use new libflashrom interface' print callback

This renames CLI's print() to flashrom_print_cb() and registers it
through the new libflashrom interface.

v2: Add libflashrom.o to LIB_OBJS now that everything can be linked
    together.

Change-Id: Idf19978eb8e340d258199193d2978f37409e9983
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17948
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
4 files changed