cdc host, add set line coding API

examples/host/cdc_msc_hid/src/tusb_config.h

@@ -109,8 +109,15 @@
 #define CFG_TUH_HID_EPOUT_BUFSIZE   64
 
 //------------- CDC -------------//
-// Set both DTR ( bit 0), RTS (bit 1) on enumeration/mounted
-#define CFG_TUH_CDC_SET_DTRRTS_ON_ENUM    0x03
+
+// Set Line Control state on enumeration/mounted:
+// DTR ( bit 0), RTS (bit 1)
+#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM    0x03
+
+// Set Line Coding on enumeration/mounted, value for cdc_line_coding_t
+// bit rate = 115200, 1 stop bit, no parity, 8 bit data width
+#define CFG_TUH_CDC_LINE_CODING_ON_ENUM   { 115200, CDC_LINE_CONDING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 }
+
 
 #ifdef __cplusplus
  }