ANDROID: KVM: arm64: Range-based module_change_host_prot

Extend module_change_host_prot to apply to a page range. This allows
protection attributes to be changed for a range of pages via a single
module API call.

Bug: 278749606
Bug: 308373293
Change-Id: Iaae1de1724a8c2c739bcb4ed0de2293dae5096a4
Signed-off-by: Keir Fraser <keirf@google.com>