Make {vendor_,}ramdisk_available.

Test: pass
Bug: 156098440
Change-Id: Ibc46f2178c8cd8cf071d2d29772320a28af87f7e
diff --git a/Android.bp b/Android.bp
index 2ef1e5d..f452cf3 100644
--- a/Android.bp
+++ b/Android.bp
@@ -39,6 +39,8 @@
         support_system_process: true,
     },
     host_supported: true,
+    ramdisk_available: true,
+    vendor_ramdisk_available: true,
     recovery_available: true,
     apex_available: [
         "//apex_available:platform",