checkpatch: Ignore ENOSYS references
Tell checkpatch to not warn on ENOSYS references.
ENOSYS is used extensively in Zephyr to indicate an
unsupported API function.
TEST=twister -T zephyr/test
BRANCH=none
# easier to upstream into the Zephyr tree, we should do the same.
# Tell checkpatch to ignore Linux style here.
--ignore BRACES
+
+# Zephyr uses ENOSYS to indicate unsupported API calls
+--ignore ENOSYS
