Mark the module as VNDK or VNDK-SP in Android.bp

As a VNDK/VNDK-SP module, Android.bp must have 'vndk' tag as well
as 'vendor_available: true'.

For a VNDK module, the 'vndk' tag has 'enabled: true'.
It will be installed system/lib(64)/vndk as a vendor variant.

For a VNDK-SP module, the 'vndk' tag has
'support_system_process: true' as well as 'enabled: true'.
It will be installed system/lib(64)/vndk-sp as a vendor variant.

Bug: 63866913
Test: build and boot with BOARD_VNDK_VERSION=current
Merged-In: I2c989f90119049728815926745a243c822fe58cb
Change-Id: I2c989f90119049728815926745a243c822fe58cb
(cherry picked from commit 2653f58813fd4a53d16718d4a77ee0b001e11ae1)
diff --git a/Android.bp b/Android.bp
index 29426a7..89c5bb7 100644
--- a/Android.bp
+++ b/Android.bp
@@ -33,6 +33,9 @@
 cc_library {
     name: "libcurl",
     vendor_available: true,
+    vndk: {
+        enabled: true,
+    },
     defaults: ["curl_common_defaults"],
     export_include_dirs: ["include"],
     host_supported: true,