ARM: SoC fixes for 6.1, part 2

There are not a lot of important fixes for the soc tree yet this
time, but it's time to upstream what I got so far:

 - DT Fixes for Arm Juno and ST-Ericsson Ux500 to add missing critical
   temperature points

 - A number of fixes for the Arm SCMI firmware, addressing correctness
   issues in the code, in particular error handling and resource leaks.

 - One error handling fix for the new i.MX93 power domain driver

 - Several devicetree fixes for NXP i.MX6/8/9 and Layerscape chips,
   fixing incorrect or missing DT properties for MDIO controller nodes,
   CPLD, USB and regulators for various boards, as well as some
   fixes for DT schema checks.

 - MAINTAINERS file updates for HiSilicon LPC Bus and Broadcom git URLs