MAINTAINERS: Change AMD PMC driver status to "Supported"

The AMD PMC driver is actively being developed, so the MAINTAINERS record
should reflect "Supported" instead of "Maintained." Update the MAINTAINERS
database to reflect this change.

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20241108070822.3912689-11-Shyam-sundar.S-k@amd.com


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>