uclibc-0.9.28.3: correct arch list (avr32 missing, stuff only in 0.9.29+)

toolchain/uClibc/uClibc-0.9.28.config

@@ -3,6 +3,7 @@
 #
 # TARGET_alpha is not set
 # TARGET_arm is not set
+# TARGET_avr32 is not set
 # TARGET_bfin is not set
 # TARGET_cris is not set
 # TARGET_e1 is not set
@@ -10,7 +11,6 @@
 # TARGET_h8300 is not set
 # TARGET_i386 is not set
 # TARGET_i960 is not set
-# TARGET_ia64 is not set
 # TARGET_m68k is not set
 # TARGET_microblaze is not set
 # TARGET_mips is not set
@@ -21,7 +21,6 @@
 # TARGET_sh64 is not set
 # TARGET_sparc is not set
 # TARGET_v850 is not set
-# TARGET_vax is not set
 # TARGET_x86_64 is not set
 
 #