[ALSA] pcm: merge rates[] from pcm_misc.c and pcm_native.c

Merge the rates[] arrays from pcm_misc.c and pcm_native.c because they
are both the same.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>