device/i2c_bus: Add missing trailing newline to console output

Improves readability in console log.

Change-Id: Ied0cbb746ff3ca6250ed9322dfb2726da0949e16
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65230
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>

src/device/i2c_bus.c

@@ -32,7 +32,8 @@ struct bus *i2c_link(const struct device *const dev)
 	}
 
 	if (!link)
-		printk(BIOS_ALERT, "%s Cannot find I2C or SMBus bus operations", dev_path(dev));
+		printk(BIOS_ALERT, "%s Cannot find I2C or SMBus bus operations\n",
+				dev_path(dev));
 
 	return link;
 }