Use lower case

target/linux/Config.in.advanced

@@ -445,7 +445,7 @@ config BR2_PACKAGE_LINUX_KCONFIG
 
 choice
 	prompt "Preferred config tool"
-	default BR2_MAKE_XCONFIG IF BR2_TARGET_ATMEL
+	default BR2_MAKE_XCONFIG if BR2_TARGET_ATMEL
 	default BR2_MAKE_MENUCONFIG
 	help
 	  Define the preferred tool to invoke if a configuration is invalid
@@ -453,7 +453,7 @@ choice
 config	BR2_MAKE_XCONFIG
 	bool "make xconfig"
 	help
-	  Run "make menuconfig" if kernel ".config" is invalid
+	  Run "make xconfig" if kernel ".config" is invalid
 
 config	BR2_MAKE_MENUCONFIG
 	bool "make menuconfig"