scripts: improve print message of build_all.sh [1/1]

PD#SWPL-67525

Problem:
improve print message of build_all.sh

Solution:
improve print message of build_all.sh

Verify:
ad401_a113l

Change-Id: I4fb06d87466c8b9ff1c8d4e3d4de107ba36d47be
Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
1 file changed