Remove BR2_LINUX_COPYTO_TFTPBOOT from avr32 defconfigs. This will cause build to fail if user is not root and don't have a /tftpboot folder

target/device/Atmel/atngw100/atngw100_defconfig

@@ -875,6 +875,6 @@ BR2_LINUX_BIN_UIMAGE=y
 # Destinations for linux kernel binaries
 #
 BR2_LINUX_COPYTO_ROOTFS=y
-BR2_LINUX_COPYTO_TFTPBOOT=y
+# BR2_LINUX_COPYTO_TFTPBOOT is not set
 BR2_LINUX_COPYTO=""
 # BR2_LINUX_COPY_CONFIGURATION is not set

target/device/Atmel/atstk1005/atstk1005_defconfig

@@ -892,6 +892,6 @@ BR2_LINUX_BIN_UIMAGE=y
 # Destinations for linux kernel binaries
 #
 BR2_LINUX_COPYTO_ROOTFS=y
-BR2_LINUX_COPYTO_TFTPBOOT=y
+# BR2_LINUX_COPYTO_TFTPBOOT is not set
 BR2_LINUX_COPYTO=""
 # BR2_LINUX_COPY_CONFIGURATION is not set

target/device/Atmel/atstk100x/atstk100x_defconfig

@@ -991,6 +991,6 @@ BR2_LINUX_BIN_UIMAGE=y
 # Destinations for linux kernel binaries
 #
 BR2_LINUX_COPYTO_ROOTFS=y
-BR2_LINUX_COPYTO_TFTPBOOT=y
+# BR2_LINUX_COPYTO_TFTPBOOT is not set
 BR2_LINUX_COPYTO=""
 BR2_LINUX_COPY_CONFIGURATION=y