mutime: Move to common/

It's valid SPARK now.

Change-Id: I03bc3fa7d9bea79680888c13679cfd871e772000
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/libhwbase/+/26839
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Reto Buerki <reet@codelabs.ch>
3 files changed