drivers/ftdi: prevent misleading error msg when more vid/pids configured

drivers/ftdi: prevent misleading error msg when more vid/pids configured

The driver tries to open mpsse engine for each vid pid
pair in sequence. If more vid/pid pairs are configured and
the USB device does not correspond to the first pair,
the driver shows 'unable to open ftdi device ...' error.

Match vid pid with the whole list as used in jtag_libusb_open()
instead of multiple mpsse_open() in for loop over vid/pid pairs.

Change-Id: I8ef55205be221c727607fe25b81ae21de0d96f02
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: https://review.openocd.org/c/openocd/+/7529
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Wolfram Sang <wsa@kernel.org>