Asoc: msm: sdm660: Move mbhc_hs_detect to late_probe

mbhc_hs_detect should be called after sound card is
registered. Move mbhc_hs_detect from audrx_init to
late_probe of snd_soc_card to handle this.

Change-Id: Ifee3cddf603143417fc0b4409c87f717ff037631
Signed-off-by: Rohit Kumar <rohitkr@codeaurora.org>