soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl

i.MX8MP has a VPU blk ctrl module that could supply clk and reset to
VPU, so add support for it.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>