New error code for interrupted waiting.

This commit is part of patch that will allow to interrupt waiting for OCF
operation.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>

modules/include/cas_ioctl_codes.h

@@ -578,6 +578,9 @@ enum kcas_error {
 
 	/** Condition token does not identify any known condition */
 	KCAS_ERR_CLS_RULE_UNKNOWN_CONDITION,
+
+	/** Waiting for async operation was interrupted*/
+	KCAS_ERR_WAITING_INTERRUPTED,
 };
 
 #endif