gcc-cross-initial: Reinstate limits.h generation fix
The removal of gcc-cross-intermediate inadvertently reintroduced a
problem with the limits.h file being incorrectly/inconsistently
generated.
http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=
b0faebd1f07e1616004bd19664395932e7c2c48f
reverted part of:
http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=
c8815d2f21849deb9359706f54dc71490773415e
This reintroduces the protected sysroot ensuring the limits.h file is
always correctly generated. To reproduce the bug, build gcc-cross, then
rebuild gcc-cross-initial and it will reference the limits.h file from
gcc-cross in the sysroot.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
