sn_hwperf: Kill BKL usage

This driver always gave up the BKL in its ioctl function, so just
convert it to unlocked_ioctl and remove the BKL here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
1 file changed