fix: memory region not page aligned

In [1] Hafnium mandates that every memory region allocated in the
manifest must be page aligned.

If the base address is not present, hafnium would allocate the
memory region. In the manifest structure, the value of the field
would be MANIFEST_INVALID_ADDRESS(all 0xfs), which would cause the
alignment validation to fail.

Hafnium allocation of memory region is dropped in [2].

The patch removes instances of such type of memory regions from
cactus partition manifest.

[1] https://review.trustedfirmware.org/c/hafnium/hafnium/+/17304
[2] https://review.trustedfirmware.org/c/hafnium/hafnium/+/19939



Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I443e30b18531072cd108c58eb0762f3bffbaf65a