cbus: fix compile issue on tahvo and retu

set_irq_noprobe has been renamed to irq_set_noprobe
on commit a0cd9ca2b907d7ee26575e7b63ac92dad768a75e
(genirq: Namespace cleanup) and cbus drivers were
left with broken compilation. Fix it.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>