ARM: dts: Add the entries required for USB3 support on USB0

Partially sync with Linux's dts to add the entries required for USB3
support on USB0.
Note that the default mode is still "peripheral" not "host". USB3 is
supported only for the host mode.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>