update at91bootstrap and u-boot-at91 patch, remove eeprom in bootstrap and ...

guowenxue

2019-08-22 b5a0e1f270688ad03f0d20199d194c948b097bd2

linux-bsp/tarballs/linux-at91.tar.xz does not exist in tree 978c62717a1d0f8ea89061e6dbbcfe65f1af779e