Staging: spectra: don't use locked_ioctl, fix build

Last patch has a style problem. Sending the correct one. Sorry for the noise

Since BKL was removed from block ioctl handling code, locked_ioctl doesn't
exist anymore.

Using ioctl instead and doing the locking manually.

Signed-off-by: Javier Martinez Canillas <martinez.javier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>