Upstream handles Octeon only for Linux targets; the generic -elfoabi*
target still needs the traditional MIPS assembler emulation.

Index: gas/configure.tgt
--- gas/configure.tgt.orig
+++ gas/configure.tgt
@@ -321,6 +321,7 @@ case ${generic_target} in
   mips-*-sysv4* | mips-*-gnu*)		fmt=elf em=tmips ;;
   mips*-sde-elf* | mips*-mti-elf* | mips*-img-elf*)
 					fmt=elf em=tmips ;;
+  mips-*-elfoabi*)			fmt=elf em=tmips ;;
   mips-*-haiku*)			fmt=elf em=haiku ;;
   mips-*-elf*)				fmt=elf ;;
   mips-*-netbsd*)			fmt=elf em=tmips ;;
