libbinder: Include stability.cpp in the Trusty NDK library

Bug: 242243245
Test: build Trusty
Change-Id: I3d449982cb3b6e5e8b40f58f1924726400a22cf0

Author: ahomescu

libs/binder/ndk/stability.cpp

@@ -23,7 +23,7 @@
 
 using ::android::internal::Stability;
 
-#ifdef __ANDROID_VNDK__
+#if defined(__ANDROID_VNDK__) && !defined(__TRUSTY__)
 #error libbinder_ndk should only be built in a system context
 #endif
 

libs/binder/trusty/ndk/rules.mk

@@ -23,6 +23,7 @@ MODULE_SRCS := \
 	$(LIBBINDER_NDK_DIR)/ibinder.cpp \
 	$(LIBBINDER_NDK_DIR)/libbinder.cpp \
 	$(LIBBINDER_NDK_DIR)/parcel.cpp \
+	$(LIBBINDER_NDK_DIR)/stability.cpp \
 	$(LIBBINDER_NDK_DIR)/status.cpp \
 
 MODULE_EXPORT_INCLUDES += \