Should take into account 8T8R vs 4T4R

[tfcollins]

linux/drivers/iio/adc/apollo/ad9088.c

Line 1257 in 148aafd

u16 lb2_fducs = side ? ADI_APOLLO_FDUC_B_ALL : ADI_APOLLO_FDUC_A_ALL;

See ADI_APOLLO_FDUC_B_ALL_4T4R vs
ADI_APOLLO_FDUC_B_ALL