Update SPI impls for STM32F318

Based on the datasheet, the following pins and peripherals are
supported:
- SPI2:
  - SCK:  PB13<AF5>, PF1<AF5>
  - MISO: PA10<AF5>, PB14<AF5>
  - MOSI: PA11<AF5>, PB15<AF5>
- SPI3:
  - SCK:  PB3<AF6>
  - MISO: PB4<AF6>
  - MOSI: PB5<AF6>

Author: danielgallagher0

src/spi.rs

@@ -24,7 +24,8 @@ use crate::stm32::SPI4;
     feature = "stm32f302xd",
     feature = "stm32f302xe",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 use crate::gpio::gpioa::{PA10, PA11};
 use crate::gpio::gpioa::{PA5, PA6, PA7};
@@ -40,7 +41,7 @@ use crate::gpio::gpioa::{PA5, PA6, PA7};
 ))]
 use crate::gpio::gpiob::PB13;
 use crate::gpio::gpiob::{PB14, PB15, PB5};
-#[cfg(any(feature = "stm32f302", feature = "stm32f303"))]
+#[cfg(any(feature = "stm32f302", feature = "stm32f303", feature = "stm32f318",))]
 use crate::gpio::gpiob::{PB3, PB4};
 use crate::gpio::gpioc::{PC10, PC11, PC12};
 #[cfg(any(
@@ -56,7 +57,8 @@ use crate::gpio::gpioe::{PE12, PE13, PE14, PE2, PE5, PE6};
     feature = "stm32f302xd",
     feature = "stm32f302xe",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 use crate::gpio::gpiof::PF1;
 #[cfg(any(
@@ -153,7 +155,8 @@ unsafe impl SckPin<SPI2> for PB13<AF5> {}
     feature = "stm32f302xd",
     feature = "stm32f302xe",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 unsafe impl SckPin<SPI2> for PF1<AF5> {}
 #[cfg(any(
@@ -182,7 +185,8 @@ unsafe impl SckPin<SPI2> for PF10<AF5> {}
 #[cfg(any(
     feature = "stm32f302",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 unsafe impl SckPin<SPI3> for PB3<AF6> {}
 unsafe impl SckPin<SPI3> for PC10<AF6> {}
@@ -218,15 +222,17 @@ unsafe impl MisoPin<SPI1> for PB4<AF5> {}
     feature = "stm32f302xd",
     feature = "stm32f302xe",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 unsafe impl MisoPin<SPI2> for PA10<AF5> {}
 unsafe impl MisoPin<SPI2> for PB14<AF5> {}
 
 #[cfg(any(
     feature = "stm32f302",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 unsafe impl MisoPin<SPI3> for PB4<AF6> {}
 unsafe impl MisoPin<SPI3> for PC11<AF6> {}
@@ -255,7 +261,8 @@ unsafe impl MosiPin<SPI1> for PB5<AF5> {}
     feature = "stm32f302xd",
     feature = "stm32f302xe",
     feature = "stm32f303xd",
-    feature = "stm32f303xe"
+    feature = "stm32f303xe",
+    feature = "stm32f318",
 ))]
 unsafe impl MosiPin<SPI2> for PA11<AF5> {}
 unsafe impl MosiPin<SPI2> for PB15<AF5> {}
@@ -471,7 +478,7 @@ hal! {
     feature = "stm32f301",
     feature = "stm32f302x6",
     feature = "stm32f302x8",
-    feature = "stm32f318"
+    feature = "stm32f318",
 ))]
 hal! {
     SPI2: (spi2, APB1, spi2en, spi2rst, pclk1),
@@ -483,7 +490,6 @@ hal! {
     feature = "stm32f302xc",
     feature = "stm32f303xb",
     feature = "stm32f303xc",
-    feature = "stm32f318",
     feature = "stm32f328",
     feature = "stm32f358",
     feature = "stm32f373",