Add samsung specific changes

Makefile

@@ -1173,6 +1173,61 @@ endif
 	$(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)include/uapi
 	$(Q)$(MAKE) $(hdr-inst)=$(hdr-prefix)arch/$(SRCARCH)/include/uapi
 
+# ---------------------------------------------------------------------------
+# Devicetree files
+ifeq ($(KBUILD_EXTMOD),)
+ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),)
+dtstree := arch/$(SRCARCH)/boot/dts
+endif
+
+else # KBUILD_EXTMOD
+# Devicetree source should live in $(KBUILD_EXTMOD)/arch/$(SRCARCH)/boot/dts/
+# But it may live inside some other folder relative to KBUILD_EXTMOD, as specified
+# by KBUILD_EXTMOD_DTS
+KBUILD_EXTMOD_DTS = arch/$(SRCARCH)/boot/dts
+ifneq ($(wildcard $(KBUILD_EXTMOD)/$(KBUILD_EXTMOD_DTS)/ $(srctree)/$(KBUILD_EXTMOD)/$(KBUILD_EXTMOD_DTS)/),)
+dtstree := $(KBUILD_EXTMOD)/$(KBUILD_EXTMOD_DTS)
+endif
+endif
+
+ifneq ($(dtstree),)
+
+%.dtb: include/config/kernel.release scripts_dtc
+	$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+
+PHONY += dtbs dtbs_install dtbs_check
+dtbs: include/config/kernel.release scripts_dtc
+	$(Q)$(MAKE) $(build)=$(dtstree)
+
+ifneq ($(filter dtbs_check, $(MAKECMDGOALS)),)
+export CHECK_DTBS=y
+dtbs: dt_binding_check
+endif
+
+dtbs_check: dtbs
+
+dtbs_install:
+	$(Q)$(MAKE) $(dtbinst)=$(dtstree) dst=$(INSTALL_DTBS_PATH)
+
+ifdef CONFIG_OF_EARLY_FLATTREE
+all: dtbs
+endif
+
+endif
+
+PHONY += scripts_dtc
+scripts_dtc: scripts_basic
+	$(Q)$(MAKE) $(build)=scripts/dtc
+
+ifneq ($(filter dt_binding_check, $(MAKECMDGOALS)),)
+export CHECK_DT_BINDING=y
+endif
+
+PHONY += dt_binding_check
+dt_binding_check: scripts_dtc
+	$(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
+
+
 ifeq ($(KBUILD_EXTMOD),)
 
 build-dir	:= .
@@ -1242,6 +1297,8 @@ endif
 # make sure no implicit rule kicks in
 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)): . ;
 
+-include $(srctree)/scripts/sec_env.mk
+
 ifeq ($(origin KERNELRELEASE),file)
 filechk_kernel.release = $(srctree)/scripts/setlocalversion $(srctree)
 else
@@ -1549,6 +1606,9 @@ vmlinuxclean:
 	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean
 	$(Q)$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) clean)
 
+legoclean:
+	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/lego/kclean.sh $(srctree)/.legofile
+
 clean: archclean vmlinuxclean resolve_btfids_clean
 
 # mrproper - Delete all generated files, including .config