Add support for the X1830 and fix bugs for X1000 v5.

Subject: Add support for the X1830 and fix bugs for X1000 v5.
From: 周琰杰 (Zhou Yanjie) <zhouyanjie@xxxxxxxxxxxxxx>
Date: Sat, 15 Feb 2020 01:27:35 +0800
Cc: linux-clk@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, paul@xxxxxxxxxxxxxxx, mturquette@xxxxxxxxxxxx, sboyd@xxxxxxxxxx, robh+dt@xxxxxxxxxx, mark.rutland@xxxxxxx

v4->v5:
1.Rebase on top of kernel 5.6-rc1.
2.Fix bugs for X1000.

Follow-Ups:
- [PATCH v5 5/6] dt-bindings: clock: Add and reorder ABI for X1000.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 0/6] Add support for the X1830 and fix bugs for X1000 v5.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 2/6] clk: Ingenic: Adjust cgu code to make it compatible with X1830.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 4/6] clk: Ingenic: Add CGU driver for X1830.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 3/6] dt-bindings: clock: Add X1830 bindings.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 6/6] clk: X1000: Add FIXDIV for SSI clock of X1000.
  - From: 周琰杰 (Zhou Yanjie)
- [PATCH v5 1/6] clk: Ingenic: Remove unnecessary spinlock when reading registers.
  - From: 周琰杰 (Zhou Yanjie)