ASoC: amd: ps: move irq handler registration

Move irq handler registration prior to platform device creation logic.
This will avoid irq handling missing scenario when platform device
raise interrrupts during it's probe sequence.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20221221172855.1618766-4-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>