usb: gadget: loopback: Fix show methods for attributes

Most of USB functions place new line after attribute value.
Let's follow this convention also in loopback function
as it improves readability.

Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
1 file changed