FP4: Build libprotobuf-cpp-full-3.9.1-vendorcompat

For now this is implicitly built by lineage specific
libprotobuf-cpp-lite-3.9.1-vendorcompat lib, but in the future this
might not be the case.

Change-Id: I724e933e046cbf631c078321d55550b96ca998da
diff --git a/device.mk b/device.mk
index ff11a70..dd45ecd 100644
--- a/device.mk
+++ b/device.mk
@@ -358,7 +358,7 @@
     android.hardware.radio.config@1.2.vendor:64 \
     android.hardware.radio.deprecated@1.0.vendor:64 \
     libjson \
-    libprotobuf-cpp-full \
+    libprotobuf-cpp-full-3.9.1-vendorcompat \
     libprotobuf-cpp-lite-3.9.1-vendorcompat \
     librmnetctl \
     libxml2