add ISO7816 peripherals

configure SERCOM 0 to 6 peripherals to communicate using the
ISO7816 T=0 protocol.
SERCOM7 should be for the 8th SIM card, but for now it is used as
UART debug output.
Auto-detection between SERCOM for the 8th SIM and debug UART will
be done later.

Change-Id: I3f1411ec5bc2ed7dfa714550d041f52be665132a
diff --git a/sysmoOCTSIM/examples/driver_examples.h b/sysmoOCTSIM/examples/driver_examples.h
index 7bb60eb..4f2ce98 100644
--- a/sysmoOCTSIM/examples/driver_examples.h
+++ b/sysmoOCTSIM/examples/driver_examples.h
@@ -12,6 +12,20 @@
 extern "C" {
 #endif
 
+void SIM0_example(void);
+
+void SIM1_example(void);
+
+void SIM2_example(void);
+
+void SIM3_example(void);
+
+void SIM4_example(void);
+
+void SIM5_example(void);
+
+void SIM6_example(void);
+
 void UART_debug_example(void);
 
 #ifdef __cplusplus