bcm2835_rng_rust: fix build error caused by PR merge

Fix build error from #273 ("rust: CStr overhaul").

Signed-off-by: Sven Van Asbroeck <[email protected]>

Author: Sven Van Asbroeck

drivers/char/hw_random/bcm2835_rng_rust.rs

@@ -28,7 +28,7 @@ impl KernelModule for RngModule {
         let of_match_tbl = OfMatchTable::new(&c_str!("brcm,bcm2835-rng"))?;
 
         let pdev = platdev::Registration::new_pinned(
-            cstr!("bcm2835-rng-rust"),
+            c_str!("bcm2835-rng-rust"),
             Some(of_match_tbl),
             &THIS_MODULE,
         )?;