support/config-fragments: update ARC toolchain

support/config-fragments: update ARC toolchain

This commit updates the br-arcle-hs38 configuration fragment to use a
slightly updated ARC toolchain in which the RPATH of the ar and ranlib
tools have been manually fixed to be correct. This is a temporary
workaround until the issue gets resolved properly in the RPATH fixing
logic, and is needed to fix a number of build issues.

Fixes:

  http://autobuild.buildroot.net/results/0ae0d6eba6e2cd8d2298cc4ba6380b8c3e9dd86a/
  (libnl)

  http://autobuild.buildroot.net/results/fa9bdad8d8b57d1db7f22abdb063ade470e9f938/
  (pcsc-lite)

  http://autobuild.buildroot.net/results/fca2ad71c7d446e4738834a1f220d950bce5fddd/
  (alsa-lib)

  http://autobuild.buildroot.net/results/945c60ff942dfd3daa4da27f5e19470e3d97aed4/
  (libcap)

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>