u-boot: restore build of command line env tools - lost during previous merge
u-boot: restore build of command line env tools - lost during previous merge

yyli/overo-oe,John-NY/overo-oe,nzjrs/overo-openembedded,scottellis/overo-oe,yyli/overo-oe,John-NY/overo-oe,John-NY/overo-oe,yyli/overo-oe,scottellis/overo-oe,scottellis/overo-oe,scottellis/overo-oe,John-NY/overo-oe,yyli/overo-oe,John-NY/overo-oe,yyli/overo-oe,scottellis/overo-oe,nzjrs/overo-openembedded,yyli/overo-oe,nzjrs/overo-openembedded,nzjrs/overo-openembedded,yyli/overo-oe,scottellis/overo-oe,yyli/overo-oe,nzjrs/overo-openembedded,scottellis/overo-oe,John-NY/overo-oe,nzjrs/overo-openembedded,John-NY/overo-oe,nzjrs/overo-openembedded