ARM: dts: da850: Add CPPI 4.1 DMA to USB OTG controller

This adds CPPI 4.1 DMA controller to USB OTG controller.

Changes since v2:
- Fixed the the property reg-names (had glue register defined)
- Removed few useless property

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>