ALSA: HDA: Cirrus - fix "Surround Speaker" volume control name

This patch fixes "Surround Speaker Playback Volume" being cut off.
(Commit b4dabfc4 was probably meant to fix this, but it fixed
only the "Switch" name, not the "Volume" name.)

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>