Revert "kbuild: Create directory for target DTB"

This reverts commit 77479b38e2f58890eb221a0418357502a5b41cd6.

Since commit 8a78756eb545 ("kbuild: create object directories simpler
and faster"), all directories for 'targets' are created.

'mkdir -p $(dir ${dtc-tmp})' is no longer needed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 916b2f7f..8fa9aa2 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -303,8 +303,7 @@
 	$(call if_changed,dt_S_dtb)
 
 quiet_cmd_dtc = DTC     $@
-cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
-	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 	$(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \