MAINTAINERS: Add entry for Nuvoton WPCM450

I am adding myself as the maintainer of WPCM450-related code.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210406120921.2484986-11-j.neuschaefer@gmx.net
Signed-off-by: Joel Stanley <joel@jms.id.au>
1 file changed