Merge pull request #830 from masahir0y/misc

gitignore: ignore GNU GLOBAL tag files
diff --git a/.gitignore b/.gitignore
index c0d5183..2f9c89d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,9 @@
 # Ignore header files copied.
 tools/fiptool/firmware_image_package.h
 tools/fiptool/uuid.h
+
+# GNU GLOBAL files
+GPATH
+GRTAGS
+GSYMS
+GTAGS