audio: copier: reject ALH multi-gateway config with zero count

copier_alh_assign_dai_index() rejected only count > MAX and count < 0,
letting count == 0 pass. A zero count creates a SOF_COMP_DAI copier with
endpoint_num == 0 (the dai-creation loop never runs), which later makes
copier_position() return -EINVAL before writing posn.

Reject count <= 0.

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

Author: abonislawski

src/audio/copier/copier_dai.c

@@ -108,7 +108,7 @@ static int copier_alh_assign_dai_index(struct comp_dev *dev,
 		}
 
 		dai_num = alh_blob->alh_cfg.count;
-		if (dai_num > IPC4_ALH_MAX_NUMBER_OF_GTW || dai_num < 0) {
+		if (dai_num > IPC4_ALH_MAX_NUMBER_OF_GTW || dai_num <= 0) {
 			comp_err(mod->dev, "Invalid dai_count: %d", dai_num);
 			return -EINVAL;
 		}
@@ -138,7 +138,7 @@ static int copier_alh_assign_dai_index(struct comp_dev *dev,
 		}
 
 		dai_num = alh_blob->alh_cfg.count;
-		if (dai_num > IPC4_ALH_MAX_NUMBER_OF_GTW || dai_num < 0) {
+		if (dai_num > IPC4_ALH_MAX_NUMBER_OF_GTW || dai_num <= 0) {
 			comp_err(mod->dev, "Invalid dai_count: %d", dai_num);
 			return -EINVAL;
 		}