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: 2012091
Change-Id: I01e3d7d1a4237ac631bbc4bd4d1c047b8b7aa207
Signed-off-by: Rohit Kumar <rohitkr@codeaurora.org>