ASoC: msm8996: Add support for HiFi headphones

HiFi headphones have High Fidelity amplifiers. To support
HiFi headphones, enable lineout audio path instead of
conventional headphone path. Change enables support for
HiFi headphones on 8996 target with WCD9335 codec.

Change-Id: I6825187d3991383eaafa38e2b4a90ef841c3792f
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>