ARM: SoC devicetree changes for v5.17

As usual, this is the bulk of the updates for the SoC tree, adding
more devices to existing files, addressing issues from ever improving
automated checking, and fixing minor issues.

The most interesting bits as usual are the new platforms.
All the newly supported SoCs belong into existing families
this time:

 - Qualcomm gets support for two newly announced platforms, both
   of which can now work in production environments: the SDX65
   5G modem that can run a minimal Linux on its Cortex-A7 core,
   and the Snapdragon 8 Gen 1, their latest high-end phone SoC.

 - Renesas adds support for R-Car S4-8, the most recent automotive
   Server/Communication SoC.

 - TI adds support for J721s2, a new automotive SoC in the K3
   family.

 - Mediatek MT7986a/b is a SoC used in Wifi routers, the latest
   generation following their popular MT76xx series. Only basic
   support is added for now.

 - NXP i.MX8 ULP8 is a new low-power variant of the widespread
   i.MX8 series.

 - TI SPEAr320s is a minor variant of the old SPEAr320 SoC that
   we have supported for a long time.

New boards with the existing SoCs include

 - Aspeed AST2500/AST2600 BMCs in TYAN, Facebook and Yadro servers

 - AT91/SAMA5 based evaluation board

 - NXP gains twenty new development and industrial boards for their
   i.MX and Layerscape SoCs

 - Intel IXP4xx now supports the final two machines in device tree
   that were previously only supported in old style board files.

 - Mediatek MT6589 is used in the Fairphone FP1 phone from 2013,
   while MT8183 is used in the Acer Chromebook 314.

 - Qualcomm gains support for the reference machines using the two
   new SoCs, plus a number of Chromebook variants and phones based
   on the Snapdragon 7c, 845 and 888 SoCs, including various
   Sony Xperia devices and the Microsoft Surface Duo 2.

 - ST STM32 now supports the Engicam i.Core STM32MP1 carrier board.

 - Tegra now boots various older Android devices based on 32-bit
   chips out of the box, including a number of ASUS Transformer
   tablets.
   There is also a new Jetson AGX Orin developer kit.

 - Apple support adds the missing device trees for all the remaining
   M1 Macbook and iMac variants, though not yet the M1 Pro/Max
   versions.

 - Allwinner now supports another version of the Tanix TX6 set-top
   box based on the H6 SoC.

 - Broadcom gains support for the Netgear RAXE500 Wireless router
   based on BCM4908.