Make *.bazel and *.cmake always LF

Otherwise, these are checked out as CRLF on Windows,
and regenerating them results in line ending diffs.

Change-Id: Ic0e611d55f91e37aaa87b76529ceade2ff94b5c7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/156981
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
diff --git a/.gitattributes b/.gitattributes
index 2f4a318..d149446 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,6 +1,8 @@
 *           text=auto
 *.glsl      eol=lf
 *.gn        eol=lf
+*.bazel     eol=lf
+*.cmake     eol=lf
 *.gni       eol=lf
 *.hlsl      eol=lf
 *.msl       eol=lf