Revert "ANDROID: KVM: arm64: Unmap S2MPU MMIO regions in MPT"

Unmapping S2MPU MMIO regions from MPTs is causing issues on oriole/raven
because it forces a 4K mapping in the first physical GB region instead
of 1G. During suspend AOC/APM can issue traffic through the S2MPUs and
the page lookup transaction fails because the MIF is powered off.

Revert the patch until the problem is fixed by AOC/APM device drivers.

This reverts commit 533c5994.

Test: unplug device, wait until it suspends, observe no crash
Bug: 190463801
Bug: 209399107
Signed-off-by: David Brazdil <dbrazdil@google.com>
Change-Id: I9a84ccf4ace459dc35918fc31d86933bc5b923f7