Add tslib, iconv build shell script for QT, and add curl build shell script

guowenxue

2019-08-05 6c7c7361ce4c81beb961c83280cf2a77b1b6810b

linux-bsp/tarballs/linux-at91.tar.xz does not exist in tree 7157b03e8ddd6948bf69c7d97a2a13ff29ed3c0b