tools/power/acpi: Enable build for EC userspace tool

This patch allows EC userspace tool to be built as an ACPI tool.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile
index 3d05237..e882c83 100644
--- a/tools/power/acpi/Makefile
+++ b/tools/power/acpi/Makefile
@@ -10,18 +10,18 @@
 
 include ../../scripts/Makefile.include
 
-all: acpidump
-clean: acpidump_clean
-install: acpidump_install
-uninstall: acpidump_uninstall
+all: acpidump ec
+clean: acpidump_clean ec_clean
+install: acpidump_install ec_install
+uninstall: acpidump_uninstall ec_uninstall
 
-acpidump: FORCE
+acpidump ec: FORCE
 	$(call descend,tools/$@,all)
-acpidump_clean:
+acpidump_clean ec_clean:
 	$(call descend,tools/$(@:_clean=),clean)
-acpidump_install:
+acpidump_install ec_install:
 	$(call descend,tools/$(@:_install=),install)
-acpidump_uninstall:
+acpidump_uninstall ec_uninstall:
 	$(call descend,tools/$(@:_uninstall=),uninstall)
 
 .PHONY: FORCE