xen/dt: Allow CONFIG_DEVICE_TREE_PARSE to include device-tree/

This allows bootfdt.c and device-tree.c to be usable without
CONFIG_HAS_DEVICE_TREE_DISCOVERY.

Gate everything else on CONFIG_HAS_DEVICE_TREE_DISCOVERY.

Signed-off-by: Alejandro Vallejo <alejandro.garciavallejo@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

xen/common/Makefile

@@ -8,7 +8,7 @@ obj-y += cpu.o
 obj-$(CONFIG_DEBUG_TRACE) += debugtrace.o
 obj-$(CONFIG_HAS_DEVICE_TREE_DISCOVERY) += device.o
 obj-$(filter-out $(CONFIG_X86),$(CONFIG_ACPI)) += device.o
-obj-$(CONFIG_HAS_DEVICE_TREE_DISCOVERY) += device-tree/
+obj-$(CONFIG_DEVICE_TREE_PARSE) += device-tree/
 obj-$(CONFIG_IOREQ_SERVER) += dm.o
 obj-y += domain.o
 obj-y += event_2l.o

xen/common/device-tree/Makefile

@@ -1,11 +1,11 @@
 obj-y += bootfdt.init.o
-obj-y += bootinfo-fdt.init.o
-obj-y += bootinfo.init.o
+obj-$(CONFIG_HAS_DEVICE_TREE_DISCOVERY) += bootinfo-fdt.init.o
+obj-$(CONFIG_HAS_DEVICE_TREE_DISCOVERY) += bootinfo.init.o
 obj-y += device-tree.o
 obj-$(CONFIG_DOMAIN_BUILD_HELPERS) += domain-build.init.o
 obj-$(CONFIG_DOM0LESS_BOOT) += dom0less-build.init.o
 obj-$(CONFIG_OVERLAY_DTB) += dt-overlay.o
-obj-y += intc.o
+obj-$(CONFIG_HAS_DEVICE_TREE_DISCOVERY) += intc.o
 obj-$(CONFIG_DOMAIN_BUILD_HELPERS) += kernel.o
 obj-$(CONFIG_STATIC_EVTCHN) += static-evtchn.init.o
 obj-$(CONFIG_STATIC_MEMORY) += static-memory.init.o