make printk, crashlog and swap support configurable

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 40361

config/Config-kernel.in

-# Copyright (C) 2006-2013 OpenWrt.org
+# Copyright (C) 2006-2014 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 #
 
+config KERNEL_PRINTK
+	bool "Enable support for printk"
+	default y
+
+config KERNEL_CRASHLOG
+	bool "Crash logging"
+	depends on !(arm || powerpc || sparc)
+	default y
+
+config KERNEL_SWAP
+	bool "Support for paging of anonymous memory (swap)"
+	default y
+
 config KERNEL_DEBUG_FS
 	bool "Compile the kernel with Debug FileSystem enabled"
 	default y