ASoC: SDCA: correct the calculation of the maximum init table size

One initial setting is 5 bytes, so num_init_writes should divide by 5.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250721112334.388506-1-shumingf@realtek.com


Signed-off-by: Mark Brown <broonie@kernel.org>