arm64: smp: Don't directly call arch_smp_send_reschedule() for wakeup

In commit 2b2d0a7a ("arm64: smp: Remove dedicated wakeup IPI") we
started using a scheduler IPI to avoid a dedicated reschedule. When we
did this, we used arch_smp_send_reschedule() directly rather than
calling smp_send_reschedule(). The only difference is that calling
arch_smp_send_reschedule() directly avoids tracing. Presumably we
_don't_ want to avoid tracing here, so switch to
smp_send_reschedule().

Fixes: 2b2d0a7a ("arm64: smp: Remove dedicated wakeup IPI")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>