NaCl: Update revision in DEPS, r12372 -> r12389

NaCl: Update revision in DEPS, r12372 -> r12389

This pulls in the following Native Client changes:

r12373: (jvoung) Skip building stack_frame.cc and eh_return.c with PNaCl sjlj.
r12374: (mcgrathr) toolchain_build: Update gcc revision
r12375: (thakis) Remove scons-related stuff from gyp.
r12376: (jvoung) Update PNaCl in TOOL_REVISIONS from 12331 -> 12372
r12377: (mcgrathr) Update ARM toolchain in TOOL_REVISIONS
r12378: (jfb) libpnaclmm: fix the compare-exchange implementation.
r12379: (jfb) Run libc++ tests on FYI bots, add lit known failures
r12380: (mcgrathr) Disable static build ID collection code for dynamic linking
r12381: (sbc) Add stubs for tcgetattr/tcsetattr/etc to libnacl.
r12382: (mcgrathr) Deploy new x86 binutils
r12383: (mcgrathr) Fix nacl.scons test of coverage mode
r12384: (mseaborn) PNaCl: Fix failure in archived-toolchain tests introduced by r12364
r12385: (nfullagar) Revert 12382 "Deploy new x86 binutils"
r12386: (jfb) Mark Clang::CodeGen/atomics-inlining.c as broken.
r12387: (yyanagisawa) Enables goma from GYP and GOMA_DIR env.
r12388: (nfullagar) Add win8 to nacl trybots.
r12389: (jfb) Fix newlib build for iconv so that we support UTF-16LE and UCS-4LE.

BUG=none
TEST=browser_tests and nacl_integration