arm64: dts: mt6359: add PMIC MT6359 related nodes

MT6359 is the primary PMIC for MT8192.
Add PMIC MT6359 related node which is used for MT8192 platform.

Signed-off-by: Hui Liu <hui.liu@mediatek.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20220421012623.3446-2-hui.liu@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>