tegra_udc.c: fix compilation with gcc 7

With gcc 7 the following compile time error occurs:

| .../drivers/usb/gadget/tegra_udc.c:2565:17: error: 'out' directive writing 3 bytes into a region of size between 2 and 11 [-Werror=format-overflow=]
|    sprintf(name, "ep%dout", i);
|                  ^~~~~~~~~
| .../drivers/usb/gadget/tegra_udc.c:2565:3: note: 'sprintf' output between 7 and 16 bytes into a destination of size 14
|    sprintf(name, "ep%dout", i);
|    ^~~~~~~~~~~~~~~~~~~~~~~~~~~

The last end point will never be greater than 32 but the compiler can
not find this out from the code. Work around this by passing a format
specifier to interpreat i as a signed char.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

0 files changed, 0 insertions, 0 deletions