UART is mapped to kernel virtual address range since commit f5f10a9ec
so it does not overlap with user address range any more.
Change-Id: If8e18904fcddcbef1ccdc91e526d0e581f61e085
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4856
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>