Add support for STM32 Virtual COM Port

usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/CdcAcmSerialDriver.java

@@ -317,6 +317,10 @@ public class CdcAcmSerialDriver implements UsbSerialDriver {
                 new int[] {
                     UsbId.ARM_MBED,
                 });
+        supportedDevices.put(UsbId.VENDOR_STM,
+                new int[] {
+                        UsbId.STM_VIRTUAL_COM_PORT,
+                });
         return supportedDevices;
     }
 

usbSerialForAndroid/src/main/java/com/hoho/android/usbserial/driver/UsbId.java

@@ -60,6 +60,9 @@ public final class UsbId {
     public static final int VENDOR_ARM = 0x0d28;
     public static final int ARM_MBED = 0x0204;
 
+    public static final int VENDOR_STM = 0x0483;
+    public static final int STM_VIRTUAL_COM_PORT = 0x5740;
+
     private UsbId() {
         throw new IllegalAccessError("Non-instantiable class");
     }