buildroot: use same defaults for atmel target as everything else

target/Config.in

@@ -26,8 +26,7 @@ endmenu
 menu "Kernel"
 choice
 	prompt "Kernel type"
-	default BR2_KERNEL_LINUX_ADVANCED if BR2_TARGET_ATMEL
-	default BR2_KERNEL_none if !BR2_TARGET_ATMEL
+	default BR2_KERNEL_none
 
 config BR2_KERNEL_none
 	bool "none"

target/linux/Config.in.advanced

@@ -505,8 +505,6 @@ config BR2_LINUX_COPYTO_ROOTFS
 
 config BR2_LINUX_COPYTO_TFTPBOOT
 	bool "Copy kernel to /tftpboot"
-	default y if BR2_TARGET_ATMEL
-	default n if !BR2_TARGET_ATMEL
 	help
 	  Copy kernel to /tftpboot directory
 
@@ -518,8 +516,6 @@ config BR2_LINUX_COPYTO
 
 config BR2_LINUX_COPY_CONFIGURATION
 	bool "Copy buildroot configuration to Linux file system"
-	default y if BR2_TARGET_ATMEL
-	default n if !BR2_TARGET_ATMEL
 	help
 	  The configuration files for buildroot, uclibc, busybox and linux
 	  are copied to the "<root>/boot" directory.