rust: pci: fix incorrect platform reference in PCI driver probe doc comment

Substitute 'platform' with 'pci'.

Fixes: 1bd8b6b ("rust: pci: add basic PCI device / driver abstractions")
Cc: stable@kernel.org
Signed-off-by: Rahul Rameshbabu <sergeantsagara@protonmail.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

Author: Binary-Eater

rust/kernel/pci.rs

@@ -270,8 +270,8 @@ pub trait Driver: Send {
 
     /// PCI driver probe.
     ///
-    /// Called when a new platform device is added or discovered.
-    /// Implementers should attempt to initialize the device here.
+    /// Called when a new pci device is added or discovered. Implementers should
+    /// attempt to initialize the device here.
     fn probe(dev: &Device<device::Core>, id_info: &Self::IdInfo) -> Result<Pin<KBox<Self>>>;
 
     /// PCI driver unbind.