ASoC: msm: qdsp6v2: Fix non-literal-null-conversion warning

../sound/soc/msm/qdsp6v2/q6lsm.c:255:33: error: expression which evaluates to zero treated as a null pointer constant of type 'struct lsm_client *' [-Werror,-Wnon-literal-null-conversion]
        lsm_session[client->session] = LSM_INVALID_SESSION_ID;
                                       ^~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: yarost12 <yaro330@gmail.com>
Signed-off-by: Albert I <krascgq@outlook.co.id>
[@nathanchance: Improve changelog text]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

sound/soc/msm/qdsp6v2/q6lsm.c

@@ -55,7 +55,6 @@ enum {
 };
 
 enum {
-	LSM_INVALID_SESSION_ID = 0,
 	LSM_MIN_SESSION_ID = 1,
 	LSM_MAX_SESSION_ID = 8,
 	LSM_CONTROL_SESSION = 0x0F,
@@ -254,9 +253,9 @@ static void q6lsm_session_free(struct lsm_client *client)
 	unsigned long flags;
 	pr_debug("%s: Freeing session ID %d\n", __func__, client->session);
 	spin_lock_irqsave(&lsm_session_lock, flags);
-	lsm_session[client->session] = LSM_INVALID_SESSION_ID;
+	lsm_session[client->session] = 0;
 	spin_unlock_irqrestore(&lsm_session_lock, flags);
-	client->session = LSM_INVALID_SESSION_ID;
+	client->session = 0;
 }
 
 static void *q6lsm_mmap_apr_reg(void)