arm: mvebu: turris_omnia: print board info as Turris Mox

Unify the way how Omnia and Mox print board information (RAM size and
serial number).

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c
index 8571541..54efd2d 100644
--- a/board/CZ.NIC/turris_omnia/turris_omnia.c
+++ b/board/CZ.NIC/turris_omnia/turris_omnia.c
@@ -426,11 +426,13 @@
 	}
 
 out:
+	printf("Turris Omnia:\n");
+	printf("  RAM size: %i MiB\n", omnia_get_ram_size_gb() * 1024);
 	if (err)
-		printf("Board: Turris Omnia (ver N/A). SN: N/A\n");
+		printf("  Serial Number: unknown\n");
 	else
-		printf("Board: Turris Omnia SNL %08X%08X\n",
-		       be32_to_cpu(version_num), be32_to_cpu(serial_num));
+		printf("  Serial Number: %08X%08X\n", be32_to_cpu(version_num),
+		       be32_to_cpu(serial_num));
 
 	return 0;
 }