ASoC: sdm660_cdc: Fix ear_pa_gain control

In analog codec, EAR PA gain control get
function is updated with input value again
resulting in override. Remove the override
of control value again.

CRs-Fixed: 2161617
Change-Id: I7ddd252adf53666a6c9adc1bc92e840067fa932c
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>