It seems that some files were removed from USB documentation.
Update the links accordingly.
Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/00008303fde6b4e06d027d3b76ae7032614a7030.1580193653.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet
