mount.h sync with glibc is needed to get new defines
which are needed for some packages like systemd
(From OE-Core rev: ce4d7f4376aac2a2df1a05884d7946ee469d63c1)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>