[AVR32] Kconfig: Choose daughterboard instead of CPU

Remove the CPU selection menu and instead let it be selected by the
board or daughterboard option. Add daughterboard selection for
ATSTK1000 (this was previously determined based on CPU type.)
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

arch/avr32/Kconfig

@@ -84,36 +84,23 @@ config PLATFORM_AT32AP
 	select MMU
 	select PERFORMANCE_COUNTERS
 
+#
+# CPU types
+#
+
+# AP7000 derivatives
 config CPU_AT32AP700X
 	bool
 	select PLATFORM_AT32AP
-
-choice
-	prompt "AVR32 CPU type"
-	default CPU_AT32AP7000
-
 config CPU_AT32AP7000
-	bool "AT32AP7000"
+	bool
 	select CPU_AT32AP700X
-
 config CPU_AT32AP7001
-	bool "AT32AP7001"
+	bool
 	select CPU_AT32AP700X
-
 config CPU_AT32AP7002
-	bool "AT32AP7002"
-	select CPU_AT32AP700X
-
-endchoice
-
-#
-# CPU Daughterboards for ATSTK1000
-config BOARD_ATSTK1002
-	bool
-config BOARD_ATSTK1003
-	bool
-config BOARD_ATSTK1004
 	bool
+	select CPU_AT32AP700X
 
 choice
 	prompt "AVR32 board type"
@@ -121,12 +108,10 @@ choice
 
 config BOARD_ATSTK1000
 	bool "ATSTK1000 evaluation board"
-	select BOARD_ATSTK1002 if CPU_AT32AP7000
-	select BOARD_ATSTK1003 if CPU_AT32AP7001
-	select BOARD_ATSTK1004 if CPU_AT32AP7002
 
 config BOARD_ATNGW100
 	bool "ATNGW100 Network Gateway"
+	select CPU_AT32AP7000
 endchoice
 
 if BOARD_ATSTK1000

arch/avr32/boards/atstk1000/Kconfig

@@ -2,6 +2,25 @@
 
 if BOARD_ATSTK1000
 
+choice
+	prompt "ATSTK1000 CPU daughterboard type"
+	default BOARD_ATSTK1002
+
+config BOARD_ATSTK1002
+	bool "ATSTK1002"
+	select CPU_AT32AP7000
+
+config BOARD_ATSTK1003
+	bool "ATSTK1003"
+	select CPU_AT32AP7001
+
+config BOARD_ATSTK1004
+	bool "ATSTK1004"
+	select CPU_AT32AP7002
+
+endchoice
+
+
 config BOARD_ATSTK100X_CUSTOM
 	bool "Non-default STK1002/STK1003/STK1004 jumper settings"
 	help