[media] solo6x10: rename jpeg.h to solo6x10-jpeg.h

This header clashes with the jpeg.h in gspca when doing a compatibility
build using the media_build system.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>