ipc4: base_fw: add IPC4_MAX_DST_QUEUE constant

Add IPC4_MAX_DST_QUEUE (value 8) as the symmetric counterpart to
IPC4_MAX_SRC_QUEUE, representing the maximum destination/output pin
queue count supported by the IPC4 protocol.

Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>

Author: abonislawski

src/include/ipc4/base_fw.h

@@ -26,6 +26,9 @@
 /* Max src queue count supported by ipc4 */
 #define IPC4_MAX_SRC_QUEUE 8
 
+/* Max dst queue count supported by ipc4 */
+#define IPC4_MAX_DST_QUEUE 8
+
 /* Max module instance for single module count supported by ipc4 */
 #define IPC4_MAX_MODULE_INSTANCES 256