dts/Makefile: don't use cpp -P
Recent dtc supports #line directives in the input source code, and even
uses them to generate useful line numbers in any messages it emits. Stop
passing -P to cpp, since there's no need any more.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/dts/Makefile b/dts/Makefile
index 5dbf59b..ccd552f 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -35,7 +35,7 @@
DT_BIN := $(obj)dt.dtb
$(DT_BIN): $(TOPDIR)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts
- $(CPP) -P $(DTS_CPPFLAGS) $< -o $(DT_BIN).dts.tmp
+ $(CPP) $(DTS_CPPFLAGS) $< -o $(DT_BIN).dts.tmp
$(DTC) $(DTC_FLAGS) -O dtb -o ${DT_BIN} $(DT_BIN).dts.tmp
process_lds = \