Fix build failure with xtensa raised since bump to version 4.14 in commit 35953d1e61aa8581be09c9dca39365955b10590e Fixes: - http://autobuild.buildroot.org/results/9320d9b2c69882e23bbe7b30057eb8bee0c9d2e5 Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> (cherry picked from commit 05a248571c19d52f11a46c669322e3aaa9713444) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>