PNaCl: Update LLVM revision in pnacl/DEPS
PNaCl: Update LLVM revision in pnacl/DEPS

This pulls in the following LLVM changes:

eff7428: (jfb@chromium.org) Fix ARM LDMIA MI.
8d4dd5f: (jfb@chromium.org) Sandbox ARM load/store exclusive dual
c75199c: (jfb@chromium.org) Fix ARM paired GPR COPY lowering
4c1316e: (jfb@chromium.org) Concurrency support for PNaCl ABI

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3475
BUG= no CC on MOVr
BUG= validation failure
BUG= non
TEST=PNaCl toolchain trybots

Review URL: https://codereview.chromium.org/19133002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11755 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client