Make the connection between implementation and llndk_library explicit

Instead of assuming a module with the .llndk suffix exists, add an
llndk_stubs property to every cc_library module that has a
corresponding llndk_library.  Also rename the llndk_library to have
an explicit .llndk suffix.

Bug: 170784825
Test: no changes to build.ninja (excluding comments) or Android-${TARGET_PRODUCT}.mk
Change-Id: Ifba79a1ae64a67a9d7393dac2fb012cd8af8e149

libprocessgroup/cgrouprc/Android.bp

@@ -22,6 +22,7 @@ cc_library {
     // defined below. The static library is built for tests.
     vendor_available: false,
     native_bridge_supported: true,
+    llndk_stubs: "libcgrouprc.llndk",
     srcs: [
         "cgroup_controller.cpp",
         "cgroup_file.cpp",
@@ -54,7 +55,7 @@ cc_library {
 }
 
 llndk_library {
-    name: "libcgrouprc",
+    name: "libcgrouprc.llndk",
     symbol_file: "libcgrouprc.llndk.txt",
     native_bridge_supported: true,
     export_include_dirs: [

libsync/Android.bp

@@ -25,6 +25,7 @@ cc_library {
     recovery_available: true,
     native_bridge_supported: true,
     defaults: ["libsync_defaults"],
+    llndk_stubs: "libsync.llndk",
     stubs: {
         symbol_file: "libsync.map.txt",
         versions: [
@@ -34,7 +35,7 @@ cc_library {
 }
 
 llndk_library {
-    name: "libsync",
+    name: "libsync.llndk",
     symbol_file: "libsync.map.txt",
     export_include_dirs: ["include"],
 }

libvndksupport/Android.bp

@@ -1,6 +1,7 @@
 cc_library {
     name: "libvndksupport",
     native_bridge_supported: true,
+    llndk_stubs: "libvndksupport.llndk",
     srcs: ["linker.cpp"],
     cflags: [
         "-Wall",
@@ -20,7 +21,7 @@ cc_library {
 }
 
 llndk_library {
-    name: "libvndksupport",
+    name: "libvndksupport.llndk",
     native_bridge_supported: true,
     symbol_file: "libvndksupport.map.txt",
     export_include_dirs: ["include"],