Staging: otus: ioctl.c: Fix Coding Style

I run make on ioctl.c file and I got two warnings:
drivers/staging/otus/ioctl.c: In function ¡usbdrv_wpa_ioctl¢:
drivers/staging/otus/ioctl.c:2269: warning: ISO C90 forbids mixed declarations and code
drivers/staging/otus/ioctl.c: In function ¡usbdrv_ioctl¢:
drivers/staging/otus/ioctl.c:2448: warning: ISO C90 forbids mixed declarations and code

From: Dragoslav Zaric <dragoslav.zaric.kd@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>