mmc: host: tmio: Add .sdio_irq()

Renesas SDHI controller requires vender specific handling when
an SDIO irq occurs. So, add .sdio_irq() to the tmio core.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250610072545.2001435-2-yoshihiro.shimoda.uh@renesas.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>