android: Make sure libtpmtss is loaded on older systems

On newer Android systems this seems to happen automatically (or does at
least not cause crashes if the library is not loaded).

src/frontends/android/app/src/main/java/org/strongswan/android/logic/CharonVpnService.java

@@ -943,6 +943,7 @@ public class CharonVpnService extends VpnService implements Runnable, VpnStateSe
 
 			if (MainActivity.USE_BYOD)
 			{
+				System.loadLibrary("tpmtss");
 				System.loadLibrary("tncif");
 				System.loadLibrary("tnccs");
 				System.loadLibrary("imcv");

src/frontends/android/app/src/main/jni/libandroidbridge/Android.mk

@@ -57,7 +57,7 @@ LOCAL_LDLIBS := -llog
 LOCAL_SHARED_LIBRARIES := libstrongswan libipsec libcharon
 
 ifneq ($(strongswan_USE_BYOD),)
-LOCAL_SHARED_LIBRARIES += libimcv libtncif libtnccs
+LOCAL_SHARED_LIBRARIES += libimcv libtncif libtnccs libtpmtss
 endif
 
 include $(BUILD_SHARED_LIBRARY)

src/frontends/android/app/src/main/jni/libandroidbridge/android_jni.c

@@ -33,6 +33,7 @@ static struct {
 } libs[] = {
 	{ "libstrongswan.so", NULL },
 #ifdef USE_BYOD
+	{ "libtpmtss.so", NULL },
 	{ "libtncif.so", NULL },
 	{ "libtnccs.so", NULL },
 	{ "libimcv.so", NULL },