MAINTAINERS: Update LL TEMAC entry to Orphan

Since there's no alternate driver, change this entry from obsolete
to orphan.

Signed-off-by: Harini Katakam <harini.katakam@amd.com>
Link: https://lore.kernel.org/r/20231005131039.25881-1-harini.katakam@amd.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>