media: verisilicon: imx8m: Use the default Hantro G1 irq handler

media: verisilicon: imx8m: Use the default Hantro G1 irq handler

The existing imx8m_vpu_g1_irq implementation is an exact copy of the
default hantro_g1_irq one. Switch over to it instead of keeping a
duplicated implementation.

Signed-off-by: Paul Kocialkowski <paulk@sys-base.io>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>