We actually want to calculate the alignment values first, then
use the alignment value to look up the data from reg_configs[].

Fixes: d3ab7955 ("phy: starfive: Add mipi dphy tx support")
Reviewed-by: Shengyang Chen <shengyang.chen@starfivetech.com>
Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Link: https://lore.kernel.org/r/20240627020059.163535-1-changhuang.liang@starfivetech.comSigned-off-by: Vinod Koul <vkoul@kernel.org>