The do_install task of eglibc-locale should depend on the do_populate_sysroot task of corresponding libc.
Patch sent out for review & merge http://git.yoctoproject.org/cgit.cgi/poky-contrib/commit/?h=llu/ml2&id=92a840f0c7e025e3b7ecddd52f828e1dc3afeb66
Fixed in master with http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=12cd07cd69baf49893504dd890601064b2b78ab1
Verified in patch