[PATCH] script: dtc: clean generated files

From: Magnus Damm <redacted>

Fix "make distclean" to clean up generated dtc files.

Without this patch the following files are left around:
 - dtc-lexer.lex.c
 - dtc-parser.tab.c
 - dtc-parser.tab.h

Signed-off-by: Magnus Damm <redacted>
Reviewed-by: Simon Horman <horms-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>
---
 scripts/dtc/Makefile |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 6d1c6bb..2a48022 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile

@@ -27,3 +27,5 @@ HOSTCFLAGS_dtc-parser.tab.o := $(HOSTCFLAGS_DTC)
 # dependencies on generated files need to be listed explicitly
 $(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
 
+# generated files need to be cleaned explicitly
+clean-files	:= dtc-lexer.lex.c dtc-parser.tab.c dtc-parser.tab.h

-- 
1.7.10.4