Merge tag 'rpi-next-2020.10' of https://gitlab.denx.de/u-boot/custodians/u-boot-raspb...

- add support for PCI and XHCI for RPi4 (64 bit only)
- optionally reset XHCI device on registration
- enable USB_KEYBOARD for rpi_4_defconfig

diff --cc arch/arm/mach-bcm283x/init.c
Simple merge

diff --cc configs/rpi_4_32b_defconfig
index 1c6b6f9,0df5c17..db7b781
--- 1/configs/rpi_4_32b_defconfig
--- 2/configs/rpi_4_32b_defconfig
+++ b/configs/rpi_4_32b_defconfig
@@@ -30,11 -26,9 +30,12 @@@ CONFIG_MMC_SDHCI_SDMA=
  CONFIG_MMC_SDHCI_BCM2835=y
  CONFIG_DM_ETH=y
  CONFIG_BCMGENET=y
 +CONFIG_PCI=y
 +CONFIG_DM_PCI=y
 +CONFIG_PCI_BRCMSTB=y
  CONFIG_PINCTRL=y
  # CONFIG_PINCTRL_GENERIC is not set
+ CONFIG_DM_RESET=y
  # CONFIG_REQUIRE_SERIAL_CONSOLE is not set
  CONFIG_USB=y
  CONFIG_DM_USB=y