Rename makefiles to help categorise them.

makefiles/config_px4fmu_default.mk

@@ -3,7 +3,6 @@
 #
 
 CONFIG		 = px4fmu_default
-PLATFORM	 = px4fmu
 SRCS		 = $(PX4_BASE)/platforms/empty.c
 
 include $(PX4_BASE)/makefiles/firmware.mk

makefiles/config_px4io_default.mk

@@ -3,7 +3,6 @@
 #
 
 CONFIG		 = px4io_default
-PLATFORM	 = px4io
 SRCS		 = $(PX4_BASE)/platforms/empty.c
 
 include $(PX4_BASE)/makefiles/firmware.mk

makefiles/firmware.mk

@@ -84,7 +84,7 @@ $(error At least one of the PLATFORM or CONFIG variables must be set before incl
 endif
 PLATFORM		:= $(firstword $(subst _, ,$(CONFIG)))
 endif
-include $(PX4_MK_INCLUDE)/$(PLATFORM).mk
+include $(PX4_MK_INCLUDE)/platform_$(PLATFORM).mk
 
 #
 # Makefile debugging.

makefiles/platform_px4fmu.mk

@@ -7,4 +7,4 @@
 #
 CONFIG_ARCH			 = CORTEXM4F
 
-include $(PX4_MK_INCLUDE)/gnu-arm-eabi.mk
+include $(PX4_MK_INCLUDE)/toolchain_gnu-arm-eabi.mk

makefiles/platform_px4io.mk

@@ -7,4 +7,4 @@
 #
 CONFIG_ARCH			 = CORTEXM3
 
-include $(PX4_MK_INCLUDE)/gnu-arm-eabi.mk
+include $(PX4_MK_INCLUDE)/toolchain_gnu-arm-eabi.mk