ARM: zte: clean up zx297520v3 doc. warnings

Fix multiple documentation build warnings.
Improve punctuation and formatting of the rendered output.

Documentation/arch/arm/zte/zx297520v3.rst:66: WARNI

ARM: zte: clean up zx297520v3 doc. warnings

Fix multiple documentation build warnings.
Improve punctuation and formatting of the rendered output.

Documentation/arch/arm/zte/zx297520v3.rst:66: WARNING: Title underline too short.
3. Building for built-in U-Boot
--------------------------- [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:90: WARNING: Enumerated list ends without a blank line; unexpected unindent. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:116: WARNING: Inline literal start-string without end-string. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:137: ERROR: Unexpected indentation. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:138: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:164: WARNING: Inline literal start-string without end-string. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:164: WARNING: Inline interpreted text or phrase reference start-string without end-string. [docutils]
Documentation/arch/arm/zte/zx297520v3.rst:7: WARNING: Document or section may not begin with a transition. [docutils]

Fixes: 220ae5d36dba ("ARM: zte: Add zx297520v3 platform support")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Stefan Dösinger <stefandoesinger@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Stefan Dösinger <stefandoesinger@gmail.com>

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ARM: zte: Add zx297520v3 platform support

This SoC is used in low end LTE-to-WiFi routers, for example some D-Link
DWR 932 revisions, ZTE K10, ZLT S10 4G, but also models that are branded
and sold b

ARM: zte: Add zx297520v3 platform support

This SoC is used in low end LTE-to-WiFi routers, for example some D-Link
DWR 932 revisions, ZTE K10, ZLT S10 4G, but also models that are branded
and sold by ISPs themselves. They are widespread in Africa, China,
Russia and Eastern Europe.

This SoC is a relative of the zx296702 and zx296718 that had some
upstream support until commit 89d4f98ae90d ("ARM: remove zte zx
platform").

Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Stefan Dösinger <stefandoesinger@gmail.com>

---

Patch changelog:
v8:
* Select ARM_PSCI_FW (Sashiko). This is an issue make defconfig pointed
out in the last patch in this series. The board does not have PSCI
firmware as far as I can tell, but the ARM_GIC_V3 option indirectly
assumes ARM_PSCI_FW is enabled.
* Include <linux/init.h> in the board file for __initdata (Sashiko),
removed other includes copypasted from another platform that aren't
needed. Let's see if Sashiko agrees.
* Add the SoC documentation to the documentation index (Sashiko)
* Add the SoC documentation to MAINTAINERS (Sashiko)
* Removed redundant if ARCH_ZTE (Sashiko)
* Point towards a sane (USB-Only) U-Boot and modify the example code for
booting from NAND to detect already fixed GIC setups.

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