msm: ADSPRPC: Use SMD on targets that doesn't support GLINK

Enable SMD for backward compatibility on targets that doesn't
support glink

Change-Id: I9e9073dd3b2d7b789c79a31ae77fff78e6e61e36
Acked-by: Bharath Kumar <bkumar@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>