Merge tag 'renesas-dt2-for-v4.1' into requests/merged

Second Round of Renesas ARM Based SoC DT Updates for v4.1

* ape6evm board
  - Configure GPIO keys as wake-up source
  - Enable pull-up for GPIO switches
  - Correct polarity of LEDs
* r8a7791 SoC
  - Correct IPMMU-GP clock to device tree
* r8a7794 SoC
  - Correct ethernet controller PHY IRQ
* lager, koelsch and marzen boards
  - Add DU external pixel clock to DT
* lager board
  - Add HDMI output support to DT
* r8a7791 and r8a7790 SoCs
  - Tidy up SDHI register size in DT
  - Reference DMA channels for SDHI in DT