Make VariableKey.name pub(crate)

This will allow it to be used in the new runtime module with freestanding
functions.

Author: nicholasbishop

uefi/src/table/runtime.rs

@@ -649,7 +649,7 @@ impl TryFrom<&[u8]> for Time {
 #[cfg(feature = "alloc")]
 #[derive(Debug)]
 pub struct VariableKey {
-    name: Vec<u16>,
+    pub(crate) name: Vec<u16>,
     /// Unique identifier for the vendor.
     pub vendor: VariableVendor,
 }