driver/intel/usb4/retimer: Change loglevel prefix

In usb4_retimer_fill_ssdt(), it search all dpf ports and shows message
in not support dpf ports.
It's not error and changes the loglevel prefix to BIOS_INFO.

BUG=b:222038287
BRANCH=firmware-brya-14505.B
TEST=emerge-brya coreboot

Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Change-Id: I508ec7662e078893f944edb3d68364c57d5c5a73
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/drivers/intel/usb4/retimer/retimer.c b/src/drivers/intel/usb4/retimer/retimer.c
index 0c027eb..a13f79a 100644
--- a/src/drivers/intel/usb4/retimer/retimer.c
+++ b/src/drivers/intel/usb4/retimer/retimer.c
@@ -358,7 +358,7 @@
 	for (dfp_port = 0; dfp_port < DFP_NUM_MAX; dfp_port++) {
 
 		if (!config->dfp[dfp_port].power_gpio.pin_count) {
-			printk(BIOS_ERR, "%s: No DFP%1d power GPIO for %s\n",
+			printk(BIOS_WARNING, "%s: No DFP%1d power GPIO for %s\n",
 				__func__, dfp_port, dev_path(dev));
 			continue;
 		}