Fix bugs in X1000/X1500 and add X1830 pinctrl driver v8.

Subject: Fix bugs in X1000/X1500 and add X1830 pinctrl driver v8.
From: 周琰杰 (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
Date: Mon, 16 Dec 2019 00:20:58 +0800
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-gpio@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, robh+dt@xxxxxxxxxx, paul.burton@xxxxxxxx, paulburton@xxxxxxxxxx, paul@xxxxxxxxxxxxxxx, mark.rutland@xxxxxxx, sernia.zhou@xxxxxxxxxxx, zhenwenjin@xxxxxxxxx, linus.walleij@xxxxxxxxxx

v7->v8:
Separate the part of introduce reg_offset in [4/4] in v7 into [3/5] in v8.

Follow-Ups:
- [PATCH v8 0/5] Fix bugs in X1000/X1500 and add X1830 pinctrl driver v8
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v8 2/5] pinctrl: Ingenic: Add missing parts for X1000 and X1500.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v8 5/5] pinctrl: Ingenic: Add pinctrl driver for X1830.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v8 3/5] pinctrl: Ingenic: Introduce reg_offset and use it instead hard code.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v8 4/5] dt-bindings: pinctrl: Add bindings for Ingenic X1830.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v8 1/5] pinctrl: Ingenic: Fix bugs in X1000 and X1500.
  - From: 周琰杰 (Zhou Yanjie)