qt: Add MCA device list to Tools

src/mca.c

@@ -45,6 +45,20 @@ uint8_t mca_read(uint16_t port)
 	return mca_card_read[mca_index](port, mca_priv[mca_index]);
 }
 
+uint8_t mca_read_index(uint16_t port, int index)
+{
+	if (mca_index >= mca_nr_cards)
+		return 0xff;
+	if (!mca_card_read[index])
+		return 0xff;
+	return mca_card_read[index](port, mca_priv[index]);
+}
+
+int mca_get_nr_cards(void)
+{
+	return mca_nr_cards;
+}
+
 void mca_write(uint16_t port, uint8_t val)
 {
 	if (mca_index >= mca_nr_cards)