Update once_cell to 1.9.0

Test: cd external/rust/crates && atest --host -c
Change-Id: Iddd1b8516f9187f948c45695a889ed6b987566ca
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index a9c1a5c..3b2d1aa 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,6 +1,6 @@
 [package]
 name = "once_cell"
-version = "1.8.0"
+version = "1.9.0"
 authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
 license = "MIT OR Apache-2.0"
 edition = "2018"
@@ -24,6 +24,13 @@
 # for up to 16 bytes smaller, depending on the size of the T.
 parking_lot = { version = "0.11", optional = true, default_features = false }
 
+# To be used in order to enable the race feature on targets
+# that do not have atomics
+# *Warning:* This can be unsound. Please read the README of
+# [atomic-polyfill](https://github.com/embassy-rs/atomic-polyfill)
+# and make sure you understand all the implications
+atomic-polyfill = { version = "0.1", optional = true }
+
 [dev-dependencies]
 lazy_static = "1.0.0"
 crossbeam-utils = "0.7.2"