console,boot_state: Exclude printk() from reported times

Use monotonic timer to accumulate the time spent in
console code.

For bootblock and romstage, only stage total is reported.
For ramstage each boot_state is reported individually.

Change-Id: Id3998bab553ff803a93257a3f2c7bfea44c31729
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36574
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/lib/prog_loaders.c

@@ -72,6 +72,8 @@ void run_romstage(void)
 
 	timestamp_add_now(TS_END_COPYROM);
 
+	console_time_report();
+
 	prog_run(&romstage);
 
 fail:
@@ -155,6 +157,8 @@ void run_ramstage(void)
 
 	timestamp_add_now(TS_END_COPYRAM);
 
+	console_time_report();
+
 	/* This overrides the arg fetched from the relocatable module */
 	prog_set_arg(&ramstage, cbmem_top());