llvm: Move it to third_party/llvm/src

Clone the llvm_project into third_party src location to make for
README.chromium and related files.

Bug: angleproject:8369
Change-Id: I625eefd8fd883a956985d217f33274ebe7fbe7ed
Signed-off-by: Gowtham Tammana <g.tammana@samsung.com>
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5111802
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

.gitignore

diff --git a/.gitignore b/.gitignore
index b5c0781..eafdd6e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,7 +66,7 @@
 /third_party/libpng/src
 /third_party/libunwind/src
 /third_party/llvm-build
-/third_party/llvm
+/third_party/llvm/src
 /third_party/markupsafe
 /third_party/meson
 /third_party/nasm

.gitmodules

diff --git a/.gitmodules b/.gitmodules
index 633259f..4b2b359 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -97,8 +97,8 @@
 	path = third_party/libpng/src
 	url = https://android.googlesource.com/platform/external/libpng
 	gclient-condition = not build_with_chromium
-[submodule "third_party/llvm"]
-	path = third_party/llvm
+[submodule "third_party/llvm/src"]
+	path = third_party/llvm/src
 	url = https://chromium.googlesource.com/external/github.com/llvm/llvm-project
 	gclient-condition = not build_with_chromium
 [submodule "third_party/jinja2"]

DEPS

diff --git a/DEPS b/DEPS
index f32f3f2..b369c18 100644
--- a/DEPS
+++ b/DEPS
@@ -461,7 +461,7 @@
     'condition': 'not build_with_chromium',
   },
 
-  'third_party/llvm': {
+  'third_party/llvm/src': {
     'url': Var('chromium_git') + '/external/github.com/llvm/llvm-project@d222fa4521531cc4ac14b8e157d231c108c003be',
     'condition': 'not build_with_chromium',
   },

third_party/llvm/src

diff --git a/third_party/llvm b/third_party/llvm/src
similarity index 100%
rename from third_party/llvm
rename to third_party/llvm/src