Without the '-s' option realpath will error out if the given path does
not exist.
(From OE-Core rev: b80aba08ba56c7e8f847966b3593f6cedd1b1ee5)
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>