ASoC: msm: Fix kernel crash in "Speaker Function" mixer control

Use snd_soc_kcontrol_codec instead of snd_kcontrol_chip
to obtain the codec information from the kcontrol.

CRs-Fixed: 2034533
Change-Id: I8b5424400ce668756ac23cbcbd6e1cec79b6255c
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>