orion5x: kconfig: move board select menu and common settings

Becuase the board select menu in arch/arm/Kconfig is too big,
move the Orion5x board select menu to orion5x/Kconfig.

Move also common settings (CONFIG_SYS_CPU="arm926ejs" and
CONFIG_SYS_SOC="orion5x").

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8ac16f9..20b580c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -193,8 +193,8 @@
 config TARGET_NHK8815
 	bool "Support nhk8815"
 
-config TARGET_EDMINIV2
-	bool "Support edminiv2"
+config ORION5X
+	bool "Marvell Orion"
 
 config TARGET_DKB
 	bool "Support dkb"
@@ -522,6 +522,8 @@
 
 source "arch/arm/cpu/armv7/omap5/Kconfig"
 
+source "arch/arm/cpu/arm926ejs/orion5x/Kconfig"
+
 source "arch/arm/cpu/armv7/rmobile/Kconfig"
 
 source "arch/arm/cpu/armv7/tegra-common/Kconfig"
@@ -536,7 +538,6 @@
 source "board/BuS/eb_cpux9k2/Kconfig"
 source "board/BuS/vl_ma2sc/Kconfig"
 source "board/CarMediaLab/flea3/Kconfig"
-source "board/LaCie/edminiv2/Kconfig"
 source "board/Marvell/aspenite/Kconfig"
 source "board/Marvell/dkb/Kconfig"
 source "board/Marvell/gplugd/Kconfig"