liblog_headers: Make vendor_ramdisk_available.

Test: pass
Bug: 156098440
Change-Id: Id5724c06fb85af4616552a1e3fc33187f2e1369f
diff --git a/liblog/Android.bp b/liblog/Android.bp
index 8f15541..9b34908 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -37,6 +37,7 @@
     host_supported: true,
     vendor_available: true,
     ramdisk_available: true,
+    vendor_ramdisk_available: true,
     recovery_available: true,
     apex_available: [
         "//apex_available:platform",