Some distros have newer makeinfo which does not go well with
anything below gcc 4.8, this fix avoids regenerating info files
(From OE-Core master rev: 50ac2ed5299e2b47b2f3fd9c9cde9d733d2f8d9b)
(From OE-Core rev: 913d847694d24f356c34dba8e815934d761047d0)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>