Provide jtagspi with information to use jtagspi for programming spi-flash devices on efinix trion and titanium devices using a proxy bitstream. Change-Id: I4a851fcaafe832c35bd7b825d95a3d08e4d57a7b Signed-off-by: Daniel Anselmi <danselmi@gmx.ch> Reviewed-on: https://review.openocd.org/c/openocd/+/7826 Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com> Tested-by: jenkins