ltp: fix ffsb ftbfs on cross-compiled environment

ltp: fix ffsb ftbfs on cross-compiled environment

Add ffsb-remove-hardcoded-configure.patch: get rid of the hardcoded configure call preventing cross-compilation
Add do_configure_prepend to explicitly force regeneration the configure file and pass configure options as appropriate.

(From OE-Core rev: ce48f4ebfeae0bca599c6e39958ec8dec11e09dd)

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>