switch from dev board to prototype

the SAM E54 Xplained Pro development board uses a SAM E54P20N
micro-controller.
the sysmocom sysmoOCTSIM prototype uses a SAM E54N19A
micro-controller.
the system LED and UART debug GPIO are different, else the code
is the same.
the Atmel START definitions have been updated accordingly.

Change-Id: Ifd15f6759c51b42a8d11b09f9f495d7e7a5b6afc
diff --git a/sysmoOCTSIM/config/peripheral_clk_config.h b/sysmoOCTSIM/config/peripheral_clk_config.h
index c9852b6..ce68abd 100644
--- a/sysmoOCTSIM/config/peripheral_clk_config.h
+++ b/sysmoOCTSIM/config/peripheral_clk_config.h
@@ -40,8 +40,8 @@
 // <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
 
 // <i> Select the clock source for CORE.
-#ifndef CONF_GCLK_SERCOM2_CORE_SRC
-#define CONF_GCLK_SERCOM2_CORE_SRC GCLK_PCHCTRL_GEN_GCLK2_Val
+#ifndef CONF_GCLK_SERCOM7_CORE_SRC
+#define CONF_GCLK_SERCOM7_CORE_SRC GCLK_PCHCTRL_GEN_GCLK2_Val
 #endif
 
 // <y> Slow Clock Source
@@ -72,24 +72,24 @@
 // <GCLK_PCHCTRL_GEN_GCLK11_Val"> Generic clock generator 11
 
 // <i> Select the slow clock source.
-#ifndef CONF_GCLK_SERCOM2_SLOW_SRC
-#define CONF_GCLK_SERCOM2_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
+#ifndef CONF_GCLK_SERCOM7_SLOW_SRC
+#define CONF_GCLK_SERCOM7_SLOW_SRC GCLK_PCHCTRL_GEN_GCLK3_Val
 #endif
 
 /**
- * \def CONF_GCLK_SERCOM2_CORE_FREQUENCY
- * \brief SERCOM2's Core Clock frequency
+ * \def CONF_GCLK_SERCOM7_CORE_FREQUENCY
+ * \brief SERCOM7's Core Clock frequency
  */
-#ifndef CONF_GCLK_SERCOM2_CORE_FREQUENCY
-#define CONF_GCLK_SERCOM2_CORE_FREQUENCY 100000000
+#ifndef CONF_GCLK_SERCOM7_CORE_FREQUENCY
+#define CONF_GCLK_SERCOM7_CORE_FREQUENCY 100000000
 #endif
 
 /**
- * \def CONF_GCLK_SERCOM2_SLOW_FREQUENCY
- * \brief SERCOM2's Slow Clock frequency
+ * \def CONF_GCLK_SERCOM7_SLOW_FREQUENCY
+ * \brief SERCOM7's Slow Clock frequency
  */
-#ifndef CONF_GCLK_SERCOM2_SLOW_FREQUENCY
-#define CONF_GCLK_SERCOM2_SLOW_FREQUENCY 32768
+#ifndef CONF_GCLK_SERCOM7_SLOW_FREQUENCY
+#define CONF_GCLK_SERCOM7_SLOW_FREQUENCY 32768
 #endif
 
 // <y> USB Clock Source