UML: remove remaining FASTCALL uses

With the x86 removal, FASTCALL is always empty now.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/um/kernel/ksyms.c

@@ -71,10 +71,10 @@ EXPORT_SYMBOL(dump_thread);
 
 /* required for SMP */
 
-extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
+extern void __write_lock_failed(rwlock_t *rw);
 EXPORT_SYMBOL(__write_lock_failed);
 
-extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
+extern void __read_lock_failed(rwlock_t *rw);
 EXPORT_SYMBOL(__read_lock_failed);
 
 #endif