All symbols starting with `w' in previous

• wbuf ./dev_bootflash.c:81
• wic_cmd ./dev_c2691_iofpga.c:70
• wic_select ./dev_c1700_iofpga.c:57
• wic_serial_data ./dev_wic_serial.c:32
• WIC_SERIAL_MODEL_2T ./dev_wic_serial.h:21