Move libmincrypt into separate repo

.gitmodules

@@ -19,3 +19,6 @@
 [submodule "nanopb"]
 	path = native/jni/external/nanopb
 	url = https://github.com/nanopb/nanopb.git
+[submodule "mincrypt"]
+	path = native/jni/external/mincrypt
+	url = https://github.com/topjohnwu/mincrypt.git

native/jni/Android.mk

@@ -12,6 +12,7 @@ LIBFDT := $(EXT_PATH)/dtc/libfdt
 LIBNANOPB := $(EXT_PATH)/nanopb
 LIBSYSTEMPROPERTIES := jni/systemproperties/include
 LIBUTILS := jni/utils/include
+LIBMINCRYPT := $(EXT_PATH)/mincrypt/include
 
 ########################
 # Binaries
@@ -127,6 +128,7 @@ LOCAL_STATIC_LIBRARIES := libmincrypt liblzma liblz4 libbz2 libfdt libutils
 LOCAL_C_INCLUDES := \
 	jni/include \
 	$(EXT_PATH)/include \
+	$(LIBMINCRYPT) \
 	$(LIBLZMA) \
 	$(LIBLZ4) \
 	$(LIBBZ2) \

native/jni/external/Android.mk

@@ -28,20 +28,6 @@ LOCAL_SRC_FILES := \
 	xz-embedded/xz_dec_stream.c
 include $(BUILD_STATIC_LIBRARY)
 
-# libmincrypt.a
-include $(CLEAR_VARS)
-LOCAL_MODULE:= libmincrypt
-LOCAL_C_INCLUDES := $(EXT_PATH)/include
-LOCAL_SRC_FILES := \
-	mincrypt/dsa_sig.c \
-	mincrypt/p256.c \
-	mincrypt/p256_ec.c \
-	mincrypt/p256_ecdsa.c \
-	mincrypt/rsa.c \
-	mincrypt/sha.c \
-	mincrypt/sha256.c
-include $(BUILD_STATIC_LIBRARY)
-
 # libnanopb.a
 include $(CLEAR_VARS)
 LOCAL_MODULE:= libnanopb
@@ -265,3 +251,5 @@ LOCAL_SRC_FILES := \
 	selinux/libsepol/cil/src/cil_post.c
 LOCAL_CFLAGS += -Dgetline=__getline -Wno-implicit-function-declaration
 include $(BUILD_STATIC_LIBRARY)
+
+include $(EXT_PATH)/mincrypt/Android.mk