genirq/cpuhotplug: Fix up lock guards conversion brainf..t

The lock guard conversion converted raw_spin_lock_irq() to
scoped_guard(raw_spinlock), which is obviously bogus and makes lockdep
mightily unhappy.

Note to self: Copy and pasta without using brain is a patently bad idea.

Fixes: 88a4df11 ("genirq/cpuhotplug: Convert to lock guards")
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Borislav Petkov <bp@alien8.de>