product/rdn2: update base address of expansion block

The base address of the SoC expansion block connected to the IO
Virtualization block is changed from 0xC000_0000_0000 to 0x10_8000_0000.
Correspondingly, update the memory region descriptor in the CMN-700
module config data and the mmio start/end address of the four ports
of the IO virtualization block.

Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
Change-Id: I44c7ec66399b276738f352d23bfd5c05dc7ceb3c