locking/lockdep: Clean up check_redundant() a bit

In preparation for adding an TRACE_IRQFLAGS dependent skip function to
check_redundant(), move it below the TRACE_IRQFLAGS #ifdef.

While there, provide a stub function to reduce #ifdef usage.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
1 file changed