Allow clippy::match_single_binding

Clippy complains that the match expressions used for cfg gating could be
rewritten as a let statement, this is a false positive.
Also adds inline on two functions.

Signed-off-by: Hugues de Valon <hugues.devalon@arm.com>

src/lib.rs

@@ -34,6 +34,8 @@
 #![no_std]
 #![allow(clippy::identity_op)]
 #![allow(clippy::missing_safety_doc)]
+// Prevent clippy from complaining about empty match expression that are used for cfg gating.
+#![allow(clippy::match_single_binding)]
 
 // This makes clippy warn about public functions which are not #[inline].
 //

src/peripheral/scb.rs

@@ -713,6 +713,7 @@ impl SCB {
     ///
     /// Cleaning the cache causes whatever data is present in the cache to be immediately written
     /// to main memory, overwriting whatever was in main memory.
+    #[inline]
     pub fn clean_dcache_by_ref<T>(&mut self, obj: &T) {
         self.clean_dcache_by_address(obj as *const T as usize, core::mem::size_of::<T>());
     }
@@ -729,6 +730,7 @@ impl SCB {
     ///
     /// Cleaning the cache causes whatever data is present in the cache to be immediately written
     /// to main memory, overwriting whatever was in main memory.
+    #[inline]
     pub fn clean_dcache_by_slice<T>(&mut self, slice: &[T]) {
         self.clean_dcache_by_address(slice.as_ptr() as usize,
                                      slice.len() * core::mem::size_of::<T>());