drivers/timer grtc: Fix for ISR prototype

Interrupt handlers are expected to have a pototype
void (const void*)
but nrfx_grtc_irq_handler has just a void(void)
(with no input parameter).
Fix it by using a trampoline.

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
1 file changed