Merge tag 'u-boot-at91-2022.01-b' of https://source.denx.de/u-boot/custodians/u-boot-at91

Second set of u-boot-at91 features for the 2022.01 cycle:

This small feature set adds the support for PWM driver for the sama5d2
SoC. It also adds a node in the DT for this SoC.