firmware: zynqmp: Move loading message to debug

Power domain driver is using this function for every IP which is PD listed.
This can end up with a lot of messages which end up in boot log. That's why
show it only in EL3 as was used in past.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/d73fc8bc663110b6e8d5e70fdb6435d1199e9db8.1642163135.git.michal.simek@xilinx.com
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index aa20e33..18a092c 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -98,7 +98,8 @@
 	int err;
 	u32 ret_payload[PAYLOAD_ARG_CNT];
 
-	printf("Loading new PMUFW cfg obj (%ld bytes)\n", size);
+	if (IS_ENABLED(CONFIG_SPL_BUILD))
+		printf("Loading new PMUFW cfg obj (%ld bytes)\n", size);
 
 	flush_dcache_range((ulong)cfg_obj, (ulong)(cfg_obj + size));