The registers were previously allocated when CONFIG_PM_SLEEP was set,
however this only saved an insignificant amount of memory otherwise.
Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Link: https://lore.kernel.org/r/20230329041440.177363-3-tasos@tasossah.comSigned-off-by: Takashi Iwai <tiwai@suse.de>