ASoC: msm: Support to configure the code for media button

There is mismatch in button 0 code value that is used
in kernel and userspace. Configure the code for button 0
to match with that of userspace.

Change-Id: Ie0518b69e50d50d81b44bea6ce48ce1db2bbae03
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>