Rename bssl-ffi to bssl-sys

Test: TreeHugger
Change-Id: I7e8e1a73d47e2fbdf81a4d6b51d7d11cea56db35
diff --git a/libs/bssl/Android.bp b/libs/bssl/Android.bp
index bed3dfb..2bb5ba5 100644
--- a/libs/bssl/Android.bp
+++ b/libs/bssl/Android.bp
@@ -22,7 +22,7 @@
     ],
     rustlibs: [
         "libbssl_avf_error_nostd",
-        "libbssl_ffi_nostd",
+        "libbssl_sys_nostd",
         "libcbor_util_nostd",
         "libciborium_nostd",
         "libcoset_nostd",