platform/x86/amd: pmc: remove CONFIG_DEBUG_FS checks

Since linux/debugfs.h already has the stubs for the used debugfs
functions when debugfs is not enabled, remove the #ifdef CONFIG_DEBUG_FS
checks.

Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922175608.630046-1-Shyam-sundar.S-k@amd.com


Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>