ARM: DT changes for 5.19, part 1

There are 40 branches this time, adding a lot of new hardware
support, and cleanups. Krzysztof Kozlowski continues his treewide
cleanups.

There are a number of new SoCs, all of them as part of existing
families, and typically added along with a reference board:

 - Renesas RZ/G2UL (R9A07G043) is the single-core version of the RZ/G2L
   general-purpose MPU.

 - Renesas RZ/V2M (R9A09G011) is a smart camera SoC

 - Renesas R-Car V4H (R8A779G0) is an automotive chip with Cortex-A76
   cores and deep learning accerlation.

 - Broadcom BCM47622 is a new broadband SoC based on a quad Cortex-A7
   and dual Wifi-6.

 - Corstone1000 is a generic platform from Arm that is used for designing
   custom SoCs, the support for now is for the Fixed Virtual Platform
   emulation for it.

 - Mediatek MT8195 (Kompanio 1200) is a high-end consumer chip used
   in upcoming Chromebooks.

 - NXP i.MXRT1050 is a Cortex-M7 based microcontroller, the first
   MMU-less SoC to be added in a while

New machines based on already supported SoCs this time are mainly
for 32-bit platforms and include:

 - Two wireless routers based on Broadcom bcm4708

 - 30 new boards based on NXP i.MX6, i.MX7 and i.MX8 families, mostly
   for the industrial embedded market, and on NXP LS1021A based
   IOT board.

 - Two ethernet switches based on Microchip LAN966

 - Eight Qualcomm Snapdragon based machines, including a smartwatch,
   a Chromebook board and some phones

 - Another phone based on the old ST-Ericsson Ux500 platform

 - Seven STM32MP1 based boards

 - Four single-board computers based on Rockchip RK3566/RK3568