gcc: fix avr32 typo

Reported-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/gcc/Config.in.host

@@ -6,7 +6,7 @@ config BR2_GCC_NEEDS_MPC
 choice
 	prompt "GCC compiler Version"
 	default BR2_GCC_VERSION_4_4_X if BR2_sparc_sparchfleon || BR2_sparc_sparchfleonv8 || BR2_sparc_sparcsfleon || BR2_sparc_sparcsfleonv8
-	default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr3
+	default BR2_GCC_VERSION_4_2_2_AVR32_2_1_5 if BR2_avr32
 	default BR2_GCC_VERSION_4_4_7_ARC if BR2_arc
 	default BR2_GCC_VERSION_4_7_X
 	help