This code wasn't changing the linux.h on i686. Make the entry match that
for i586 which was correct.
This fixes problems where the wrong dynamic loader path was used by
nativesdk-gcc on i686 SDK targets by ensuring SYSTEMLIBS_DIR is replaced
by %r in the correct header files.
(From OE-Core rev: d30eb681f41bf9e921f7f0d42747fff7a4be9229)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>