arm64: dts: imx95: correct the address length of netcmix_blk_ctrl

The netc_blk_ctrl is controlled by the imx95-blk-ctl clock driver and
provides relevant clock configurations for NETC, SAI and MQS. Its address
length should be 8 bytes instead of 0x1000.

Fixes: 7764fef2 ("arm64: dts: imx95: Add NETCMIX block control support")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>