net: ipa: use dev PM wakeirq handling

Replace the enable_irq_wake() call with one to dev_pm_set_wake_irq()
instead. This will let the dev PM framework automatically manage the
the wakeup capability of the ipa IRQ and ensure that userspace requests
to enable/disable wakeup for the IPA via sysfs are respected.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20230127202758.2913612-1-caleb.connolly@linaro.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>