KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2

mainline inclusion
from mainline-v5.10
commit: d7547c55
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I66COX
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=d7547c55cbe7471255ca51f14bcd4699f5eaabe5



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The previous KVM_CAP_MANUAL_DIRTY_LOG_PROTECT has some problem which
blocks the correct usage from userspace.  Obsolete the old one and
introduce a new capability bit for it.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[Remove test code because the test code is too different.]
Signed-off-by:  <zhengchuan&lt;zhengchuan@huawei.com>