ASoC: fsl_sai: fix 1:1 bclk:mclk ratio support

Refactoring in commit a50b7926d015 ("ASoC: fsl_sai: implement 1:1
bclk:mclk ratio support") led to the bypass never happening
as (ratio = 1) was caught in the existing if (ratio & 1) continue;
check. The correct check sequence instead is:

 - skip all ratios lower than one and higher than 512
 - skip all odd ratios except for 1:1
 - skip 1:1 ratio if and only if !support_1_1_ratio

And for all others, calculate the appropriate divider. Adjust the
code to facilitate this.

Fixes: a50b7926d015 ("ASoC: fsl_sai: implement 1:1 bclk:mclk ratio support")
Signed-off-by: Ahmad Fatoum <[email protected]>
Acked-by: Shengjiu Wang <[email protected]>
Reviewed-by: Sascha Hauer <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

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