set_secondary_clock_source
clock.set_secondary_clock_source(VIA_CLKSRC_X1, true);
clock->set_secondary_clock_source = dummy_set_clock_source;
clock->set_secondary_clock_source = set_secondary_clock_source;
clock->set_secondary_clock_source = set_secondary_clock_source;
void (*set_secondary_clock_source)(enum via_clksrc src, bool use_pll);