libsnapshot: compile tests for both 32 and 64 bit

Bug: 360254891
Test: vts_libsnapshot_test
Change-Id: I7c49bf5e40c58022e1930e054ebc0bd9319b4da2

fs_mgr/libsnapshot/Android.bp

@@ -285,7 +285,6 @@ cc_defaults {
     ],
     auto_gen_config: true,
     require_root: true,
-    compile_multilib: "first",
 }
 
 cc_test {
@@ -298,6 +297,15 @@ cc_test {
         "vts",
         "general-tests",
     ],
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
     test_options: {
         min_shipping_api_level: 30,
     },
@@ -315,6 +323,7 @@ cc_test {
     test_suites: [
         "general-tests",
     ],
+    compile_multilib: "64",
     test_options: {
         // Legacy VAB launched in Android R.
         min_shipping_api_level: 30,

fs_mgr/libsnapshot/snapuserd/Android.bp

@@ -239,9 +239,19 @@ cc_defaults {
     test_options: {
         min_shipping_api_level: 30,
     },
+
+    compile_multilib: "both",
+    multilib: {
+        lib32: {
+            suffix: "32",
+        },
+        lib64: {
+            suffix: "64",
+        },
+    },
+
     auto_gen_config: true,
     require_root: true,
-    compile_multilib: "first",
 }
 
 cc_test {