Make SPI Mode public

Author: Sh3Rm4n

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   - This allow using 72 MHz `sysclk` on the `stm32f303`
 - Analog gpio trait ([#33](https://github.com/stm32-rs/stm32f3xx-hal/pull/33))
 - Add PWM Channels ([#34](https://github.com/stm32-rs/stm32f3xx-hal/pull/34))
+- SPI embedded hal modes are now public ([#35](https://github.com/stm32-rs/stm32f3xx-hal/pull/18))
 
 ### Breaking changes
 

src/spi.rs

@@ -2,7 +2,8 @@
 
 use core::ptr;
 
-use crate::hal::spi::{FullDuplex, Mode, Phase, Polarity};
+use crate::hal::spi::FullDuplex;
+pub use crate::hal::spi::{Mode, Phase, Polarity};
 use crate::stm32::{SPI1, SPI2, SPI3};
 use nb;