Add a compatible string for the UART inside the Nuvoton WPCM450 SoC.
It works the same as the UART in NPCM750.
Signed-off-by: NJonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20210320181610.680870-10-j.neuschaefer@gmx.netSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>