buildcommon: use default sdk path if env unset and arm

Change-Id: I4f4565e4a4548714f5f677c4465682f631c4d423
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Signed-off-by: Hugo Beauzée-Luyssen <hugo@beauzee.fr>

buildall.sh

 #!/bin/bash
 
+
+[ "" != "${TIZEN_SDK}" ] || TIZEN_SDK="${HOME}/tizen-sdk"
+[ "" != "${TIZEN_ABI}" ] || TIZEN_ABI="armv7l"
+
+
 SCRIPT=$(readlink -f "$0")
 PROJECTPATH=$(dirname "$SCRIPT")
 . ${PROJECTPATH}/buildcommon