cardem: Make card_emu_report_status() optionally use IRQ endpoint

This just introduces the capability to report on IRQ, but we don't
actually use it yet.

Change-Id: I83db4463b7010ba243a8adbda3ac9393975b4814
diff --git a/firmware/libcommon/include/card_emu.h b/firmware/libcommon/include/card_emu.h
index e545593..aaa07c5 100644
--- a/firmware/libcommon/include/card_emu.h
+++ b/firmware/libcommon/include/card_emu.h
@@ -56,7 +56,7 @@
 
 struct llist_head *card_emu_get_uart_tx_queue(struct card_handle *ch);
 void card_emu_have_new_uart_tx(struct card_handle *ch);
-void card_emu_report_status(struct card_handle *ch);
+void card_emu_report_status(struct card_handle *ch, bool report_on_irq);
 
 #define ENABLE_TX	0x01
 #define ENABLE_RX	0x02