V4L/DVB (6352): ir-kbd-i2c: Missing break statement

Someone added a new case without adding a break to the one before it.

Thanks to Margus <b-berski at mbox200 dot swipnet dot se> for spotting this.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>