soc: qcom: ipc_logging: Add enable/disable feature for IPC log

This feature allow enabling/disabling IPC logs through debugfs
on per client basis. Also, it provides feature for enabling/disabling
IPC logs for all the clients.

CRs-Fixed: 2212818
Change-Id: Iab8e25f329afe92d5ee55ddd3631941f95683f55
Signed-off-by: Dhoat Harpal <hdhoat@codeaurora.org>