Merge tag 'u-boot-atmel-2020.01-a' of https://gitlab.denx.de/u-boot/custodians/u-boot-atmel

First set of u-boot-atmel features and fixes for 2020.01 cycle

The feature set includes support for two new boards from Microchip AT91:
The sama5d27_wlsom1_ek , an evaluation kit which includes the SAMA5D2
SOC packaged in a 256 MB LPDDR2 SIP, on a SOM including wireless, which
is placed on evaluation kit with sd-card, ethernet, LCD, Camera sensor,
QSPI, etc
The sam9x60ek, an evaluation kit for the new SoC based on ARM926j , the
SAM9X60 . The evaluation kit includes NAND flash, QSPI, Ethernet, Audio,
Camera sensor connector, etc.
The full support for sam9x60ek will come at a later time. There are
still missing bits regarding the clock support and power management
controller.