scan_command_t -> struct scan_command

src/jtag/arm-jtag-ew.c

src/jtag/bitq.c

src/jtag/commands.c

src/jtag/commands.h

src/jtag/driver.c

src/jtag/ft2232.c

src/jtag/jlink.c

src/jtag/vsllink.c