un-deprecate gcc-4.2.1 for AVR32 external toolchain

target/device/Config.in.toolchain

@@ -20,7 +20,6 @@ config BR2_TOOLCHAIN_ATMEL_AVR32_4_1_2
 config BR2_TOOLCHAIN_ATMEL_AVR32_4_2_1
 	bool "Use prepatched source for AVR32 gcc-4.2.1 toolchain"
 	depends on BR2_avr32
-	depends on BR2_DEPRECATED
 	select BR2_EXT_GCC_VERSION_4_2_1
 	select BR2_EXT_BINUTILS_VERSION_2_17
 	select BR2_EXT_UCLIBC_VERSION_0_9_29