added printf debug support

DecaRanging.coproj

semihosting/semihosting.c

semihosting/semihosting.h

semihosting/sh_cmd.s

src/application/dw_main.c

src/application/instance.c

src/application/instance.h

src/application/instance_common.c

src/decadriver/deca_device_api.h

src/decadriver/deca_param_types.h

src/decadriver/deca_regs.h

src/decadriver/deca_types.h

src/decadriver/deca_version.h

src/platform/deca_spi.c

src/platform/deca_spi.h

src/usb/deca_usb.c

src/usb/deca_usb.h

src/usb/usb_conf.h

src/usb/usbd_conf.h

src/usb/usbd_desc.h