Add support for HS in buildroot

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Set tar to 1.26 for Buildroot

For some reasons tar 1.27 causes a linker error on RHEL5 even with recent
GCC and Binutils. To resolve this problem set version to 1.26 forcefully.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>