rust: Add in link-time optimization by default

This turns on "fat" LTO for builds even in dev mode so that we can keep our
binaries size down. It's not a total solution, but eliminates the "kitchen sink"
effect that building Rust static libs has, allowing us to keep our dependencies
down a bit.

Change-Id: I5fb071d7cdb7b9964b2af25d8137944593bd065c
GitOrigin-RevId: fe7f105307e042c211be5d031870d6161d71e27c

apps/system/components/DebugConsole/Cargo.toml

@@ -7,3 +7,17 @@ members = [
     "kata-shell",
     "kata-uart-client",
 ]
+
+[profile.dev]
+lto = "fat"
+codegen-units = 1
+
+[profile.release]
+opt-level = "z"
+lto = "fat"
+codegen-units = 1
+split-debuginfo = "unpacked"
+
+[profile.release.build-override]
+opt-level = "z"
+codegen-units = 1

apps/system/components/MlCoordinator/Cargo.toml

@@ -4,3 +4,17 @@ members = [
     "ml-common",
     "ml-coordinator",
 ]
+
+[profile.dev]
+lto = "fat"
+codegen-units = 1
+
+[profile.release]
+opt-level = "z"
+lto = "fat"
+codegen-units = 1
+split-debuginfo = "unpacked"
+
+[profile.release.build-override]
+opt-level = "z"
+codegen-units = 1

apps/system/components/ProcessManager/Cargo.toml

@@ -4,3 +4,17 @@ members = [
     "kata-proc-common",
     "kata-proc-manager",
 ]
+
+[profile.dev]
+lto = "fat"
+codegen-units = 1
+
+[profile.release]
+opt-level = "z"
+lto = "fat"
+codegen-units = 1
+split-debuginfo = "unpacked"
+
+[profile.release.build-override]
+opt-level = "z"
+codegen-units = 1