[XS] Change in coreboot[main]: Makefile: Add ctags target in Makefile

[Name of user not set (Code Review)]

Attention is currently required from: Martin L Roth.

Hello Martin L Roth,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/85936?usp=email

to look at the new patch set (#2).

Change subject: Makefile: Add ctags target in Makefile
......................................................................

Makefile: Add ctags target in Makefile

Add 'ctags' target.
we can see that 'make help' says
...
  ctags / ctags-project ...
...
but, Makefile have only 'ctags-project' target.

Change-Id: Ie554892bcb072d773babf745d7756630327d2975
Signed-off-by: melongmelong 
---
M Makefile
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/36/85936/2