sh: Export sh7723 VPU, VEU2H0, VEU2H1 using uio_pdrv_genirq

This patch exports the VPU, VEU2H0 and VEU2H1 blocks of the sh7723
to user space using the uio_pdrv_genirq platform driver.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>