arm: mvebu: Move Armada XP/38x Kconfig to mach specific Kconfig file

Introduce a mach-mvebu/Kconfig for all Armada based SoC's.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7981355..29abdcc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -105,18 +105,8 @@
 	bool "Marvell Kirkwood"
 	select CPU_ARM926EJS
 
-config TARGET_DB_88F6820_GP
-	bool "Support DB-88F6820-GP"
-	select CPU_V7
-	select SUPPORT_SPL
-
-config TARGET_DB_MV784MP_GP
-	bool "Support db-mv784mp-gp"
-	select CPU_V7
-	select SUPPORT_SPL
-
-config TARGET_MAXBCM
-	bool "Support maxbcm"
+config ARCH_MVEBU
+	bool "Marvell MVEBU family (Armada XP/38x)"
 	select CPU_V7
 	select SUPPORT_SPL
 
@@ -684,6 +674,8 @@
 
 source "arch/arm/mach-kirkwood/Kconfig"
 
+source "arch/arm/mach-mvebu/Kconfig"
+
 source "arch/arm/cpu/armv7/mx7/Kconfig"
 
 source "arch/arm/cpu/armv7/mx6/Kconfig"