ath10k: Define structure for copy engine interrupt map for SNOC

The WLAN driver request and free the copy engine interrupt
according to the WLAN host target communication and protocol
in different WLAN context and subsystem state. The ath10k snoc
free/request all copy engine interrupt line during wlan subsystem
recovery due to firmware crash or hardware interface down etc.

To avoid the kernel warning and fault due to redundant copy engine
interrupt request/free in different wlan state. Define structure
for copy engine to maintain the stat of copy engine interrupt list
request/free.

Change-Id: I5cf3de4feecfb3a93a930c4939dc0a80bfc14e55
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>