gitignore: ignore GNU GLOBAL tag files
GNU GLOBAL (https://www.gnu.org/software/global/) is source code
tagging system. It creates 4 tag files (GTAGS, GRTAGS, GSYMS and
GPATH) for the symbol cross-reference. Ignore them.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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