[ARM32VE] improve early print

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
[ARM32VE] Remove early printf support

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
[ARM] Allwinner A20: fix Sun7i device tree.

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>