ASoC: msm: qdsp6v2: Fix bug in device V2 command

This change is to fix missing braces in Device V2
command. Without the braces Device V2 command will
return error code even though the command is
successful. Device V2 command is used to send device
configuration to CVD during voice call. This command
is used to inform ADSP about internal or external EC mode.

CRs-Fixed: 492994
Change-Id: I2bf12b8cdbc6765bffb2ed9e6460160cf8afa81a
Signed-off-by: Venkat Sudhir <vsudhir@codeaurora.org>