Add target binderDriverInterfaceTest_IPC_32

Add the target binderDriverInterfaceTest_IPC_32 which tests 32-bit
kernel and is independent from product_variables.

Bug: 62124459
Test: vts-tradefed run commandAndExit vts -m VtsKernelBinderTest
Change-Id: Ifad9ef24c35060179650955e24d1f046af7b7385
diff --git a/libs/binder/tests/Android.bp b/libs/binder/tests/Android.bp
index acd0538..4a84149 100644
--- a/libs/binder/tests/Android.bp
+++ b/libs/binder/tests/Android.bp
@@ -15,6 +15,13 @@
 //
 
 cc_test {
+    name: "binderDriverInterfaceTest_IPC_32",
+    srcs: ["binderDriverInterfaceTest.cpp"],
+    compile_multilib: "32",
+    cflags: ["-DBINDER_IPC_32BIT=1"],
+}
+
+cc_test {
     product_variables: {
         binder32bit: {
             cflags: ["-DBINDER_IPC_32BIT=1"],