soc: qcom: Fix access after free for channel private data

WDSP glink channel data is freed in wdsp_glink_release() if
glink channel is not closed before free, then that can result
in access after free. Fix this issue by waiting in wdsp_glink_release
till all the open glink channels are closed. Also enable minimal control
path info logs so that we have necessary information in case of issues.

Change-Id: I8a24170e355d33172e2157f8d19b0b6885cf8829
Signed-off-by: Ashish Jain <ashishj@codeaurora.org>