toolchain: allow choosing the MIPS64 user-land ABI

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 36205

toolchain/Makefile

@@ -64,6 +64,7 @@ ifneq ($(ARCH),)
 		mkdir -p "$$dir"; \
 		cd "$$dir"; \
 		ln -nsf lib lib64; \
+		ln -nsf lib lib32; \
 		mkdir -p stamp lib usr/include usr/lib ; \
 	); done
 	@grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@