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>
diff --git a/cli_classic.c b/cli_classic.c
index a2c2014..984a4da 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -30,6 +30,7 @@
 #include "flash.h"
 #include "flashchips.h"
 #include "programmer.h"
+#include "libflashrom.h"
 
 static void cli_classic_usage(const char *name)
 {
@@ -135,6 +136,8 @@
 	char *tempstr = NULL;
 	char *pparam = NULL;
 
+	flashrom_set_log_callback((flashrom_log_callback *)&flashrom_print_cb);
+
 	print_version();
 	print_banner();