m68k: mcf532x: move CPU type to Kconfig and refactor config.mk

This commit intends to stop grepping CPU type in
arch/m68k/cpu/mcf532x/config.mk.

Move the CPU type config options from include/configs/*.h
to arch/m68k/Kconfig and refactor the CPU flags select in
arch/m68k/cpu/mcf532x/config.mk.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Alison Wang <alison.wang@freescale.com>
Cc: Angelo Dureghello <angelo@sysam.it>
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 8f9b4a7..67308eb 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -14,6 +14,15 @@
 config MCF530x
 	bool
 
+config MCF5301x
+	bool
+
+config MCF532x
+	bool
+
+config MCF537x
+	bool
+
 # processor type
 config M5208
 	bool
@@ -47,6 +56,19 @@
 	bool
 	select MCF530x
 
+config M53015
+	bool
+	select MCF5301x
+
+config M5329
+	bool
+	select MCF532x
+
+config M5373
+	bool
+	select MCF532x
+	select MCF537x
+
 choice
 	prompt "Target select"
 
@@ -94,15 +116,19 @@
 
 config TARGET_ASTRO_MCF5373L
 	bool "Support astro_mcf5373l"
+	select M5373
 
 config TARGET_M53017EVB
 	bool "Support M53017EVB"
+	select M53015
 
 config TARGET_M5329EVB
 	bool "Support M5329EVB"
+	select M5329
 
 config TARGET_M5373EVB
 	bool "Support M5373EVB"
+	select M5373
 
 config TARGET_M54418TWR
 	bool "Support M54418TWR"