spinlock

I have no idea if this is correct. Clang would complain about the "I"
constraint being invalid and then crash. This workaround just lets me
move on to fix the next bug for now.

arch/arm64/include/asm/spinlock.h

@@ -58,7 +58,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
 	/* We got the lock. Critical section starts here. */
 "3:"
 	: "=&r" (lockval), "=&r" (newval), "=&r" (tmp), "+Q" (*lock)
-	: "Q" (lock->owner), "I" (1 << TICKET_SHIFT)
+	: "Q" (lock->owner), "r" (1 << TICKET_SHIFT)
 	: "memory");
 }
 
@@ -77,7 +77,7 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock)
 "	cbnz	%w1, 1b\n"
 "2:"
 	: "=&r" (lockval), "=&r" (tmp), "+Q" (*lock)
-	: "I" (1 << TICKET_SHIFT)
+	: "r" (1 << TICKET_SHIFT)
 	: "memory");
 
 	return !tmp;