serial: arm_dcc: Convert to use default_serial_puts

Use default_serial_puts() instead of its own implementation.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Michal Simek <monstr@monstr.eu>
1 file changed