[PATCH] build: fix make distclean

[Juergen Gross <jgross@xxxxxxxx>]

"make distclean" will complain that "-c" is no supported flag for make.

Fix that by using "-C".

The error has been present for a long time, but it was uncovered only
recently.

Fixes: 2400a9a365c5619 ("tools/debugger: Allow make to recurse into debugger/")
Fixes: f9c9b127753e9ed ("tools: fix make distclean")
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 tools/debugger/gdbsx/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/debugger/gdbsx/Makefile b/tools/debugger/gdbsx/Makefile
index 8d7cd94a31..5571450a89 100644
--- a/tools/debugger/gdbsx/Makefile
+++ b/tools/debugger/gdbsx/Makefile
@@ -14,7 +14,7 @@ clean:
 
 .PHONY: distclean
 distclean: clean
-       set -e; for d in xg gx; do $(MAKE) -c $$d distclean; done
+       set -e; for d in xg gx; do $(MAKE) -C $$d distclean; done
 
 .PHONY: install
 install: all
-- 
2.26.2