Add mandatory data-layout field again.
Add mandatory data-layout field again.

See rust-lang/rust#31367 (comment)

thejpster/kinetis-frdm,thejpster/kinetis-frdm,thejpster/launchpad-rs,thejpster/bare-metal-arm-rust,thejpster/bare-metal-arm-rust,thejpster/launchpad-rs