Updating the libc-headers to match the 4.1 LTSI kernel version.
We also tweak the logic in linux-libc-headers.inc to look in the
4.x subdirectory if a 4.x kernel is specified as the header source.
(From OE-Core rev: 3143920c541b55b543b9dcc12b18af4e0e4b7ae1)
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
