tpm: cr50: Correct logging statements

Fix up some logging statements in this file. Most of them should use
log_debug(), apart from one error.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/tpm/cr50_i2c.c b/drivers/tpm/cr50_i2c.c
index 64831a4..a761e3d 100644
--- a/drivers/tpm/cr50_i2c.c
+++ b/drivers/tpm/cr50_i2c.c
@@ -494,13 +494,13 @@
 			continue;
 		}
 
-		log_warning("TPM ready after %ld ms\n", get_timer(start));
+		log_debug("TPM ready after %ld ms\n", get_timer(start));
 
 		return 0;
 	} while (get_timer(start) < TIMEOUT_INIT_MS);
 
-	log_warning("TPM failed to reset after %ld ms, status: %#x\n",
-		    get_timer(start), access);
+	log_err("TPM failed to reset after %ld ms, status: %#x\n",
+		get_timer(start), access);
 
 	return -EPERM;
 }
@@ -539,7 +539,7 @@
 		log_err("Failed to claim locality\n");
 		return -EPERM;
 	}
-	log_info("Claimed locality %d\n", loc);
+	log_debug("Claimed locality %d\n", loc);
 	priv->locality = loc;
 
 	return 0;
@@ -577,7 +577,7 @@
 {
 	struct cr50_priv *priv = dev_get_priv(dev);
 
-	printf("%s: cleanup %d\n", __func__, priv->locality);
+	log_debug("cleanup %d\n", priv->locality);
 	if (priv->locality != -1)
 		release_locality(dev, 1);