[U-Boot] [U-Boot,V9,1/4] usb: rockchip: add the rockusb gadget

[Philipp Tomsich]

> this patch implement rockusb protocol on the device side. this is based on USB
> download gadget infrastructure. the rockusb function implements the rd, wl, rid
> commands. it can work with rkdeveloptool
> 
> Signed-off-by: Eddie Cai <eddie.cai.linux at gmail.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> 
> Changes in v9:                                                                  
> -fix compile error
> 
> Changes in v8:                                                                  
> -none
> 
> Changes in v7:
> -none
> 
> Changes in v6:
> -move some data to f_rockusb structure
> 
> Changes in v5:
> -fix build error when build non-rockchip board
> -fix checkpatch error
> 
> Changes in v4:
> -use enum instead of macro define
> -move some structure define and macro to f_rockusb.h
> -add some function comment as Simon required
> -address other comment from Simon
> -fix build error as Lukasz point out
> ---
>  arch/arm/include/asm/arch-rockchip/f_rockusb.h | 132 +++++
>  drivers/usb/gadget/Kconfig                     |   8 +
>  drivers/usb/gadget/Makefile                    |   1 +
>  drivers/usb/gadget/f_rockusb.c                 | 691 +++++++++++++++++++++++++
>  4 files changed, 832 insertions(+)
>  create mode 100644 arch/arm/include/asm/arch-rockchip/f_rockusb.h
>  create mode 100644 drivers/usb/gadget/f_rockusb.c
> 

Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>