drivers: dma: gpdma: reduce logging verbosity

Reduce logging verbosity in status call from INF to DBG as the function
can be called any given time i.e. eveything is fine even if the read and
write pointers don't differ.

Signed-off-by: Jaska Uimonen <jaska.uimonen@linux.intel.com>
diff --git a/drivers/dma/dma_dw_common.c b/drivers/dma/dma_dw_common.c
index 50fdc1f..8959842 100644
--- a/drivers/dma/dma_dw_common.c
+++ b/drivers/dma/dma_dw_common.c
@@ -719,7 +719,7 @@
 		if (delta) {
 			size = chan_data->ptr_data.buffer_bytes;
 		} else {
-			LOG_INF("%s size is 0!", __func__);
+			LOG_DBG("%s size is 0!", __func__);
 		}
 	}
 
@@ -751,7 +751,7 @@
 		if (delta) {
 			size = chan_data->ptr_data.buffer_bytes;
 		} else {
-			LOG_INF("%s size is 0!", __func__);
+			LOG_DBG("%s size is 0!", __func__);
 		}
 	}