Fix bugs in X1000/X1500 and add X1830 pinctrl driver v7

[åçæ (Zhou Yanjie)]

v6->v7:
1.Change my Signed-off-by from "Zhou Yanjie <zhouyanjie@xxxxxxxx>"
  to "åçæ (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>" because
  the old mailbox is in an unstable state.
2.Add "ingenic_chip_info.reg_offset", use it instead of having
  hardcoded, and add "PZ_BASE()" / "PZ_GID2LD()" macros, use it
  with "ingenic_chip_info.reg_offset" to simplify code related
  to shadow registers.
3.Simplify the code of the "ingenic_set_bias" function.