[PATCH 04/13] scripts: add new scripts_dtc target

[Ahmad Fatoum]

Later commit will add a target for building all enabled device trees.
For this to work, we need to build the device tree compiler first, but
there is only a scripts target, which builds many extra tools
unnecessary for a mere device tree compilation.

Therefore, let's split that up and add a new scripts_dtc target that can
be depended on separately.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 Makefile         | 6 +++++-
 scripts/Makefile | 3 +--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 5f5f830af5d2..82f90373cbbd 100644
--- a/Makefile
+++ b/Makefile
@@ -1032,7 +1032,7 @@ include/config/kernel.release: FORCE
 # Carefully list dependencies so we do not try to build scripts twice
 # in parallel
 PHONY += scripts
-scripts: scripts_basic include/generated/utsrelease.h
+scripts: scripts_basic scripts_dtc include/generated/utsrelease.h
 	$(Q)$(MAKE) $(build)=$(@)
 
 # Things we need to do before we recursively start building the kernel
@@ -1121,6 +1121,10 @@ dtbs: $(all_dtbs)
 
 endif
 
+PHONY += scripts_dtc
+scripts_dtc: scripts_basic
+	$(Q)$(MAKE) $(build)=scripts/dtc
+
 # ---------------------------------------------------------------------------
 # Modules
 
diff --git a/scripts/Makefile b/scripts/Makefile
index a780f05bd90f..6d89af7d4f35 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -62,8 +62,7 @@ userccflags += -I $(srctree)/$(src)/include -isystem $(srctree)/scripts/include
 
 subdir-y			+= mod
 subdir-y			+= imx
-subdir-$(CONFIG_DTC)		+= dtc
 subdir-$(CONFIG_ARCH_TEGRA)	+= tegra
 
 # Let clean descend into subdirs
-subdir-	+= basic kconfig
+subdir-	+= basic dtc kconfig
-- 
2.39.5