errno: add new ERRNO_IS_NOT_SUPPORTED() helper

src/basic/errno-util.h

@@ -86,3 +86,11 @@ static inline bool ERRNO_IS_RESOURCE(int r) {
                       ENFILE,
                       ENOMEM);
 }
+
+/* Three different errors for "operation/system call/ioctl not supported" */
+static inline bool ERRNO_IS_NOT_SUPPORTED(int r) {
+        return IN_SET(abs(r),
+                      EOPNOTSUPP,
+                      ENOTTY,
+                      ENOSYS);
+}