Amber: Rename files for better conformance to naming conventions

configs/amber/src/Makefile

@@ -36,10 +36,10 @@
 -include $(TOPDIR)/Make.defs
 
 ASRCS =
-CSRCS		= up_boot.c
+CSRCS = atmega_boot.c
 
 ifeq ($(CONFIG_ARCH_LEDS),y)
-CSRCS		+= up_leds.c
+CSRCS += atmega_leds.c
 endif
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))

configs/amber/src/amber_internal.h

@@ -43,7 +43,7 @@
 #include <nuttx/config.h>
 
 /****************************************************************************
- * Pre-Processor Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 /* Configuration ************************************************************/
 
@@ -63,7 +63,8 @@
 
 #ifdef __cplusplus
 #define EXTERN extern "C"
-extern "C" {
+extern "C"
+{
 #else
 #define EXTERN extern
 #endif
@@ -77,7 +78,7 @@ extern "C" {
  ************************************************************************************/
 
 #if defined(CONFIG_AVR_SPI1) || defined(CONFIG_AVR_SPI2)
-EXTERN void weak_function atmega_spiinitialize(void);
+void weak_function atmega_spiinitialize(void);
 #endif
 
 /************************************************************************************
@@ -89,7 +90,7 @@ EXTERN void weak_function atmega_spiinitialize(void);
  ************************************************************************************/
 
 #ifdef CONFIG_ARCH_LEDS
-EXTERN void atmega_ledinit(void);
+void atmega_ledinit(void);
 #endif
 
 #undef EXTERN

configs/amber/src/atmega_boot.c

@@ -1,5 +1,5 @@
 /************************************************************************************
- * configs/amber/src/up_boot.c
+ * configs/amber/src/atmega_boot.c
  *
  *   Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>