Revert^2 "rules.mk: Enable spin feature for no_std use case"

This reverts commit 700accfd4b9b135521cdceaf66b8b34fa3006b74.

Reason for revert: Re-land once it works

Change-Id: I9e908ac26e4dbb2c1dc50413239449855a9662db
diff --git a/cargo_embargo.json b/cargo_embargo.json
index e32afad..5cbcf7d 100644
--- a/cargo_embargo.json
+++ b/cargo_embargo.json
@@ -30,6 +30,19 @@
           "no_std": true
         }
       }
+    },
+    {
+      "generate_androidbp": false,
+      "generate_rulesmk": true,
+      "features": [
+        "spin",
+        "spin_no_std"
+      ],
+      "package": {
+        "lazy_static": {
+          "no_std": true
+        }
+      }
     }
   ]
 }
diff --git a/rules.mk b/rules.mk
index d685e85..fca012a 100644
--- a/rules.mk
+++ b/rules.mk
@@ -1,11 +1,22 @@
-# This file is generated by cargo2rulesmk.py --run.
-# Do not modify this file as changes will be overridden on upgrade.
+# This file is generated by cargo_embargo.
+# Do not modify this file after the LOCAL_DIR line
+# because the changes will be overridden on upgrade.
+# Content before the first line starting with LOCAL_DIR is preserved.
 
 LOCAL_DIR := $(GET_LOCAL_DIR)
 MODULE := $(LOCAL_DIR)
 MODULE_CRATE_NAME := lazy_static
-MODULE_SRCS := \
-	$(LOCAL_DIR)/src/lib.rs \
-
+MODULE_RUST_CRATE_TYPES := rlib
+MODULE_SRCS := $(LOCAL_DIR)/src/lib.rs
+MODULE_ADD_IMPLICIT_DEPS := false
 MODULE_RUST_EDITION := 2015
+MODULE_RUSTFLAGS += \
+	--cfg 'feature="spin"' \
+	--cfg 'feature="spin_no_std"'
+
+MODULE_LIBRARY_DEPS := \
+	external/rust/crates/spin \
+	trusty/user/base/lib/libcompiler_builtins-rust \
+	trusty/user/base/lib/libcore-rust
+
 include make/library.mk