ANDROID: KVM: arm64: Expose pKVM module mm APIs in module_ops

Some partners may need to load plug-ins in their modules, which will
require mapping the plugin code in a way that is very similar to how
pKVM maps module code. To ease this use-case, expose the pKVM module
memory-management APIs in the module_ops struct.

Bug: 264070847
Change-Id: I8b30ca50692c6860e3988b847b63ba1553c729cb
Signed-off-by: Quentin Perret <qperret@google.com>