It doesn't make much sense to have a console in the pbl
but not in the main barebox binary.

Fixes:
pbl/console.c:34:5: error: redefinition of 'ctrlc'
include/stdio.h:60:19: note: previous definition of 'ctrlc' was here

pbl/console.c:39:6: error: redefinition of 'console_putc'
include/stdio.h:49:20: note: previous definition of 'console_putc' was here

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>