No ifunc for strcmp and strlen

This is a workaround to unbreak bank apps

Bug: 120254692
Test: Run broken apps
Change-Id: I47a655e9648a6d5f50856f712d8e1cf2be24b440
diff --git a/libc/Android.bp b/libc/Android.bp
index 0098d07..d2c6300 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -1429,7 +1429,12 @@
             srcs: ["arch-x86/dynamic_function_dispatch.cpp"],
         },
         arm: {
-            srcs: ["arch-arm/dynamic_function_dispatch.cpp"],
+            srcs: [
+                "arch-arm/dynamic_function_dispatch.cpp",
+
+                // Workaround for b/120254692.
+                "arch-arm/dynamic_function_wrapper.S",
+            ],
         },
     },