nv_dac2_pix_pll_find
result = nv_dac2_pix_pll_find(target,&pix_setting,&m,&n,&p, 1);
head1_pix_pll_find = (dac_pix_pll_find) nv_dac2_pix_pll_find;
head2_pix_pll_find = (dac_pix_pll_find) nv_dac2_pix_pll_find;
status_t nv_dac2_pix_pll_find(display_mode target,float * result,uint8 *,uint8 *,uint8 *, uint8);