Added a new function to read ISO14443-B ST Microelectronics SRI512 memory tags.

I have a problem with CRC though: sometimes it works, sometimes not, I have no
clue why, I must be doing something wrong with the CRC calculation routine...

armsrc/appmain.c

@@ -611,6 +611,10 @@ void UsbPacketReceived(BYTE *packet, int len)
 		case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443:
 			AcquireRawAdcSamplesIso14443(c->ext1);
 			break;
+
+		case CMD_READ_SRI512_TAG:
+			ReadSRI512Iso14443(c->ext1);
+			break;
 
 		case CMD_READER_ISO_14443a:
 			ReaderIso14443a(c->ext1);