- DEBUG_LL support, which is incompatible with multi-soc MXS image
   because of different DUART base address on MX23 and MX28
 - uncompress message support
Signed-off-by: NShawn Guo <shawn.guo@freescale.com>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>