We ship libpthread with uninative. when uninative is active we're seeing
failures like:
libgcc_s.so.1 must be installed for pthread_cancel to work
Aborted
which is since we don't have a libgcc that matches libpthread. Add libgcc
to avoid these errors.
(From OE-Core rev: a134a7186b2266378bc0b08c134e169a943eedde)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>