dev-arm: Fix PCI range in VExpress_GEM5_Foundation

When we added the PCI mem range in the VExpress_GEM5_Foundation [1], we
meant to add a 256GiB region starting at 0x40 0000 0000.

By mistake the end address was set to 0x8 0000 0000 rather than
0x80 0000 0000

[1]: https://gem5-review.googlesource.com/c/public/gem5/+/44165

Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Change-Id: I848b8fee11fb742939c9343aae4ee5205aa836e4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/62511
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed