PNaCl: Update clang revision in pnacl/COMPONENT_REVISIONS
PNaCl: Update clang revision in pnacl/COMPONENT_REVISIONS

This pulls in the following Clang changes:

d57a6f8: (phosek@chromium.org) Use LLVM LTO instead of IR types to improve compatibility
ce163fd: (phosek@chromium.org) Support -rdynamic option in the new driver

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4347
TEST= PNaCl toolchain trybots
R=dschuff@chromium.org

Review URL: https://codereview.chromium.org/1834833002 .

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