Update LLVM submodule

This pushes us beyond the advertised commit in TF, but upstream is already at this commit. We want some new changes in MLIR for declarative parsers

Closes https://github.com/google/iree/pull/680

PiperOrigin-RevId: 293388613

SUBMODULE_VERSIONS

diff --git a/SUBMODULE_VERSIONS b/SUBMODULE_VERSIONS
index a0b10c9..bfecca5 100644
--- a/SUBMODULE_VERSIONS
+++ b/SUBMODULE_VERSIONS
@@ -6,7 +6,7 @@
 48233ad3d45b314a83474b3704ae09638e3e2621 third_party/glslang
 495ced98de99a5895e484b2e09771edb42d3c7ab third_party/google_tracing_framework
 f2fb48c3b3d79a75a88a99fba6576b25d42ec528 third_party/googletest
-7b6e49a2f022288f010bc600323f1d0aafca6241 third_party/llvm-project
+386fd2c170a78798a097650b8714183d5a9d93c6 third_party/llvm-project
 80d452484c5409444b0ec19383faa84bb7a4d351 third_party/pybind11
 b73f111094da3e380a1774b56b15f16c90ae8e23 third_party/sdl2
 b252a50953ac4375cb1864e94f4b0234db9d215d third_party/spirv_headers

third_party/llvm-project

diff --git a/third_party/llvm-project b/third_party/llvm-project
index 7b6e49a..386fd2c 160000
--- a/third_party/llvm-project
+++ b/third_party/llvm-project
@@ -1 +1 @@
-Subproject commit 7b6e49a2f022288f010bc600323f1d0aafca6241
+Subproject commit 386fd2c170a78798a097650b8714183d5a9d93c6