[PATCH v2] gitignore: Don't ignore 'tags' directory

[Li Zhijian]

LKP reported warnings [1] regarding files being ignored:
   tools/testing/selftests/arm64/tags/.gitignore: warning: ignored by one of the .gitignore files
   tools/testing/selftests/arm64/tags/Makefile: warning: ignored by one of the .gitignore files
   tools/testing/selftests/arm64/tags/tags_test.c: warning: ignored by one of the .gitignore files

These warnings can be reproduced by compiling the kernel with the W=1 option.
Although these files are tracked by Git and the warnings are false
positives, adjusting the .gitignore entries will prevent these warnings and
ensure a smoother script execution.

[1] https://lore.kernel.org/linux-kselftest/202411251308.Vjm5MzVC-lkp@xxxxxxxxx/

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx>
---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 56972adb5031..6c57bb0259c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -128,6 +128,7 @@ series
 
 # ctags files
 tags
+!tags/
 TAGS
 
 # cscope files
-- 
2.44.0