Merge "Align backtrace_test names between soong and mk" into master-soong

libbacktrace/Android.bp

@@ -128,6 +128,15 @@ cc_test {
     ],
     compile_multilib: "both",
 
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
+
     target: {
         android: {
             cflags: ["-DENABLE_PSS_TESTS"],