ola: disable -Werror

By default, the ola build uses -Werror, so let's pass
--disable-fatal-warnings to remove this and avoid build failures
caused by warnings.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ola/ola.mk

@@ -19,7 +19,8 @@ OLA_CONF_OPT = \
 	--disable-tcmalloc \
 	--disable-unittests \
 	--disable-root-check \
-	--disable-java-libs
+	--disable-java-libs \
+	--disable-fatal-warnings
 
 # sets where to find python libs built for target and required by ola
 OLA_CONF_ENV = PYTHONPATH=$(TARGET_DIR)/usr/lib/python$(PYTHON_VERSION_MAJOR)/site-packages