Add SPIRV-Tools file source/capability_set.cpp
diff --git a/third_party/Android.mk b/third_party/Android.mk
index 1146f8f..04b9404 100644
--- a/third_party/Android.mk
+++ b/third_party/Android.mk
@@ -170,6 +170,7 @@
 LOCAL_SRC_FILES:= \
 		source/assembly_grammar.cpp \
 		source/binary.cpp \
+		source/capability_set.cpp \
 		source/diagnostic.cpp \
 		source/disassemble.cpp \
 		source/ext_inst.cpp \