buildtools-tarball.bb: Fix PATH for environment setup script
It only added ${SDKPATHNATIVE}/usr/bin to PATH which didn't work when files
were installed to other bin dirs such as /bin or /sbin, for example,
nativesdk-pigz installs the files to /bin, now fix it to keep align with sdk's
PATH.
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit
67cac575a5696af5bad1aab888b65ea2686adff7)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
