ARM: dts: DRA7: Move USB_OTG 4 to dra74x.dtsi

The 4th USB controller instance present only on the DRA74x family of
devices so move it there.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Merge branch 'connectivity-ti-linux-3.14.y' of git://git.ti.com/connectivity-integration-tree/connectivity-ti-linux-kernel into ti-linux-3.14.y

TI-Feature: connectivity
TI-Tree: git://git.ti.com/connectivity-integration-tree/connectivity-ti-linux-kernel.git
TI-Branch: connectivity-ti-linux-3.14.y

* 'connectivity-ti-linux-3.14.y' of git://git.ti.com/connectivity-integration-tree/connectivity-ti-linux-kernel:
  ARM: dts: DRA7: Move USB_OTG 4 to dra74x.dtsi

Conflicts:
	arch/arm/boot/dts/dra7.dtsi

Signed-off-by: Dan Murphy <DMurphy@ti.com>