Merge branch 'qcom-main' of https://source.denx.de/u-boot/custodians/u-boot-snapdragon

Various minor fixes and improvements:

* Fix Qualcomm SPMI v5 support
* Move default environment to a file
* Add support for special pins (e.g ufs/mmc reset/data pins)
* IPQ moves to OF_UPSTREAM and receives some cleanup and MAINTAINERS
  changes
* Add a reset driver for devices without PSCI
* msm8916 USB clock improvements for mobile devices