ul_cintf: some GCC versions seems to not honor/use COMMON sections
Use extern and UL_ATTR_WEAK attribute instead. Not optimal but works even with gcc (Debian 10.2.1-6) 10.2.1 20210110.
Signed-off-by: Pavel Pisa <pisa@...>
Authored by: Pavel Pisa 2023-03-28
Parent: [5414b9]
Child: [dd8eaa]
