Add SYSRESETREQ option, fix JTAG I/O, LPC4330 flash_algo

1. Add a CONF_SYSRESETREQ option in swd_host.c for the LPC43xx and other targets that require a soft reset for flash programming (RESET_PROGRAM).
2. Implement JTAG I/O (TDI, TDO) for the LPC11U35 interface.
3. Fixed issues with the LPC_SPIFI flash algorithm used by the LPC4330 target. Moved flash device parameters to a header file (FlashDev.h).
4. Disabled full chip erase for LPC4330 targets to allow applications to use part of 4MB or 8MB flash devices for data or a filesystem.
5. On usbd_user_msc.c set autorst if flash copy was succesful.