toolchain/binutils: do not install host libiberty.a into target lib dir

toolchain/binutils: do not install host libiberty.a into target lib dir

Binutils target build will pick it up and break build on e.g. arm:

libtool: link: arm-openwrt-linux-uclibcgnueabi-gcc -shared  .libs/archive.o .libs/archures.o .libs/bfd.o .libs/bfdio.o .libs/bfdwin.o .libs/cache.o .libs/coffgen.o .libs/corefile.o .libs/format.o .libs/init.o .libs/libbfd.o .libs/opncls.o .libs/reloc.o .libs/section.o .libs/syms.o .libs/targets.o .libs/hash.o .libs/linker.o .libs/srec.o .libs/binary.o .libs/tekhex.o .libs/ihex.o .libs/stabs.o .libs/stab-syms.o .libs/merge.o .libs/dwarf2.o .libs/simple.o .libs/compress.o .libs/verilog.o .libs/elf32-arm.o .libs/elf32.o .libs/elf-nacl.o .libs/elf-vxworks.o .libs/elf.o .libs/elflink.o .libs/elf-attrs.o .libs/elf-strtab.o .libs/elf-eh-frame.o .libs/dwarf1.o .libs/elf32-gen.o .libs/cpu-arm.o   -L/mnt/dl/slave/at91/build/staging_dir/target-arm_arm926ej-s_uClibc-0.9.33.2_eabi/usr/lib -L/mnt/dl/slave/at91/build/staging_dir/target-arm_arm926ej-s_uClibc-0.9.33.2_eabi/lib -L/mnt/dl/slave/at91/build/staging_dir/toolchain-arm_arm926ej-s_gcc-4.8-linaro_uClibc-0.9.33.2_eabi/usr/lib -L/mnt/dl/slave/at91/build/staging_dir/toolchain-arm_arm926ej-s_gcc-4.8-linaro_uClibc-0.9.33.2_eabi/lib -L/mnt/dl/slave/at91/build/build_dir/target-arm_arm926ej-s_uClibc-0.9.33.2_eabi/binutils-2.24/bfd/../libiberty/pic -liberty -lz  -march=armv5te -mtune=arm926ej-s -mfloat-abi=soft -Wl,-lc -Wl,--as-needed -Wl,-lm -Wl,--no-as-needed   -Wl,-soname -Wl,libbfd-2.24.so -o .libs/libbfd-2.24.so
/mnt/dl/slave/at91/build/staging_dir/toolchain-arm_arm926ej-s_gcc-4.8-linaro_uClibc-0.9.33.2_eabi/lib/libiberty.a: could not read symbols: File format not recognized

Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 42430