The default baseboard for the tqma53 (MBa53) uses UART2 for debug console.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Having the board config file in /env/init has the problem that
the settings in /env/config are overwritten in the init sequence.

This moves the config-board files to /env/ and sources them explicitly
from /env/bin/init before sourcing /env/config

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>