xen/spinlock: address violations of MISRA C:2012 Rules 8.2 and 8.3

Give a name to unnamed parameters to address violations of
MISRA C:2012 Rule 8.2 ("Function types shall be in prototype form with
named parameters").
Keep consistency between parameter names and types used in function
declarations and the ones used in the corresponding function
definitions, thus addressing violations of MISRA C:2012 Rule 8.3
("All declarations of an object or function shall use the same names
and type qualifiers").

No functional changes.

Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/include/xen/spinlock.h

@@ -125,8 +125,9 @@ struct lock_profile_qhead {
     } while(0)
 
 void _lock_profile_register_struct(
-    int32_t, struct lock_profile_qhead *, int32_t);
-void _lock_profile_deregister_struct(int32_t, struct lock_profile_qhead *);
+    int32_t type, struct lock_profile_qhead *qhead, int32_t idx);
+void _lock_profile_deregister_struct(int32_t type,
+    struct lock_profile_qhead *qhead);
 
 #define lock_profile_register_struct(type, ptr, idx)                          \
     _lock_profile_register_struct(type, &((ptr)->profile_head), idx)
@@ -178,7 +179,7 @@ typedef struct spinlock {
 #define spin_lock_init(l) (*(l) = (spinlock_t)SPIN_LOCK_UNLOCKED)
 
 void _spin_lock(spinlock_t *lock);
-void _spin_lock_cb(spinlock_t *lock, void (*cond)(void *), void *data);
+void _spin_lock_cb(spinlock_t *lock, void (*cb)(void *), void *data);
 void _spin_lock_irq(spinlock_t *lock);
 unsigned long _spin_lock_irqsave(spinlock_t *lock);