HSI: hsi_char: Update ioctl-number.txt

Added ioctl range for HSI char devices to the documentation
Signed-off-by: NAndras Domokos <andras.domokos@nokia.com>
Signed-off-by: NCarlos Chinea <carlos.chinea@nokia.com>

Documentation/ioctl/ioctl-number.txt

@@ -223,6 +223,7 @@ Code  Seq#(hex)	Include File		Comments
 'j'	00-3F	linux/joystick.h
 'k'	00-0F	linux/spi/spidev.h	conflict!
 'k'	00-05	video/kyro.h		conflict!
+'k'	10-17	linux/hsi/hsi_char.h	HSI character device
 'l'	00-3F	linux/tcfs_fs.h		transparent cryptographic file system
 					<http://web.archive.org/web/*/http://mikonos.dia.unisa.it/tcfs>
 'l'	40-7F	linux/udf_fs_i.h	in development: