dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding

dt-bindings: usb: fix the STM32F7 DWC2 OTG HS core binding

commit 4c437920fa216f66f6a5d469cae2a0360cc2d9c7 upstream.

This patch fixes binding documentation for DWC2 controller in HS mode
found on STMicroelectronics STM32F7 SoC.
The v2 former patch [1] had been acked by Rob Herring, but v1 was merged.

[1] https://patchwork.kernel.org/patch/9925575/

Fixes: 000777dadc7e ("dt-bindings: usb: Document the STM32F7xx DWC2 ...")
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>