lptools: add to build

Use TW_EXCLUDE_LPTOOLS to exclude from build

Will only be included on devices with dynamic partitions

Change-Id: I77092344a1e31e749161cb31e6e020f6e9fc3800
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index 763fbac..5d4ceb2 100755
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -247,6 +247,9 @@
         RECOVERY_LIBRARY_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/liblpdump_interface-V1-cpp.so
         RECOVERY_LIBRARY_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libprotobuf-cpp-full.so
     endif
+    ifeq ($(TW_EXCLUDE_LPTOOLS),)
+        RECOVERY_BINARY_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/lptools
+    endif
 endif
 
 ifneq ($(wildcard system/core/libsparse/Android.*),)