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

This pulls in the following LLVM changes:

1eed52c: (phosek@chromium.org) Cherry-Pick r240869: [MC] Align fragments when -mc-relax-all flag is used
f660caa: (phosek@chromium.org) Cherry-Pick r240870: [MC] Ensure that pending labels are flushed when -mc-relax-all flag is used
5127c53: (kschimpf@google.com) Fix NaCl bitstream reader handling of array literal abbreviations.
0bad68d: (kschimpf@google.com) Fix code to handle bad blockinfo block abbreviation index bits.
56b0728: (phosek@chromium.org) Use -mc-relax-all flag for sandboxed translator
dd59d53: (kschimpf@google.com) Fix bug with error types. Error types can't be zero.
58b8aae: (dschuff@chromium.org) SimplifyAllocas: Handle any noop cast (not just bitcast) for dbg.declare

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4063
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4186
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4215
BUG= https://code.google.com/p/nativeclient/issues/detail?id=4203
TEST= PNaCl toolchain trybots
R=jvoung@chromium.org

Review URL: https://codereview.chromium.org/1222513002.

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