package/binutils (arc): backport PR56780 patches

package/binutils (arc): backport PR56780 patches

--disable-install-libiberty configure option is broken
in gcc 4.8.x, so libiberty.a is always installed in HOST_DIR.

This library broke the host-gdb build due to a fpic/fPIC issue.

Since binutils use a copy of gcc's libiberty sources, it's
affected by the same bug.

binutils-arc-2014.11 which is based on 2.23 branch doesn't have
the PR56780 fixies, so backport them.

Fixes:
http://autobuild.buildroot.net/results/ca4/ca45297aa0ffbc9062ed92dc7ac070b0b33001de/

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>