serial: liteuart: fix MODULE_ALIAS

modprobe can't handle spaces in aliases.

Fixes: 1da81e55 ("drivers/tty/serial: add LiteUART driver")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Link: https://lore.kernel.org/r/20220104131030.1674733-1-hi@alyssa.is


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>