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: I98f17957d16acef82e0762828715149101768a82
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
Signed-off-by: Avinash Chandra <avicha@codeaurora.org>