uboot-phytec

usb: dwc2_udc_otg: add bcm2835 SoC (Raspberry Pi4) support

Broadcom 2835 SoC requires special conversion of physical memory addresses
for DMA purpose, so add needed wrappers to dwc2_udc_otg driver. Also extend
the list of compatible devices with 'brcm,bcm2835-usb' entry. This allows
to use USB gadget drivers (i.e. DFU) on Raspberry Pi4 boards.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>