memory: mtk-smi: Adjust some code position

memory: mtk-smi: Adjust some code position

No functional change. Only move the code position to make the code more
readable.
1. Put the register smi-common above smi-larb. Prepare to add some others
   register setting.
2. Put mtk_smi_larb_unbind around larb_bind.
3. Sort the SoC data alphabetically. and put them in one line as the
   current kernel allow it.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Ikjoon Jang <ikjn@chromium.org>
Link: https://lore.kernel.org/r/20210914113703.31466-6-yong.wu@mediatek.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>