Remove ndk_platform backend. Use the ndk backend.

The ndk_platform backend will soon be deprecated because the ndk backend
can serve the same purpose. This is to eliminate the confusion about
having two variants (ndk and ndk_platform) for the same 'ndk' backend.

Bug: 161456198
Test: m
Change-Id: Ibe8beeaf0d1b33968fb782f1f70c17ae9e9bf871
diff --git a/security/keymint/aidl/default/Android.bp b/security/keymint/aidl/default/Android.bp
index 230534c..c2918ef 100644
--- a/security/keymint/aidl/default/Android.bp
+++ b/security/keymint/aidl/default/Android.bp
@@ -22,9 +22,9 @@
         "-Wextra",
     ],
     shared_libs: [
-        "android.hardware.security.keymint-V1-ndk_platform",
-        "android.hardware.security.sharedsecret-V1-ndk_platform",
-        "android.hardware.security.secureclock-V1-ndk_platform",
+        "android.hardware.security.keymint-V1-ndk",
+        "android.hardware.security.sharedsecret-V1-ndk",
+        "android.hardware.security.secureclock-V1-ndk",
         "libbase",
         "libbinder_ndk",
         "libcppbor_external",