ASoC: cs43130: Fix numerator/denominator mixup

In converting to using the standard u16_fract type, commit [1] made the
obvious mistake and failed to take account of the difference in
numerator and denominator ordering, breaking all uses of the cs43130
codec.

Fix it.

[1] commit e14bd35e ("ASoC: cs43130: Re-use generic struct u16_fract")

Fixes: e14bd35e ("ASoC: cs43130: Re-use generic struct u16_fract")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>