choose kernel for toolchain only builds

Config.in

@@ -89,6 +89,15 @@ source "package/Config.in.auto.global"
 source "package/Config.in.auto"
 endmenu
 
+choice
+prompt "Kernel Version"
+config ADK_KERNEL_VERSION_TOOLCHAIN
+	prompt "2.6.39.4"
+	boolean
+	depends on ADK_TOOLCHAIN_ONLY
+
+endchoice
+
 menu "Kernel configuration"
 depends on !ADK_TOOLCHAIN_ONLY && !ADK_CHOOSE_TARGET_ARCH && !ADK_CHOOSE_TARGET_KERNEL && !ADK_CHOOSE_TARGET_SYSTEM && ADK_TARGET_KERNEL_CUSTOMISING
 

mk/kernel-ver.mk

@@ -1,3 +1,8 @@
+ifeq ($(ADK_KERNEL_VERSION_TOOLCHAIN),y)
+KERNEL_VERSION:=	2.6.39.4
+KERNEL_RELEASE:=	1
+KERNEL_MD5SUM:=		a17c748c2070168f1e784e9605ca043d
+endif
 ifeq ($(ADK_KERNEL_VERSION_2_6_39_4),y)
 KERNEL_VERSION:=	2.6.39.4
 KERNEL_RELEASE:=	1