KVM: Fix some wrong function names in comment

Fix some wrong function names in comment. mmu_check_roots is a typo for
mmu_check_root, vmcs_read_any should be vmcs12_read_any and so on.
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/vmx/vmcs_shadow_fields.h

@@ -28,7 +28,7 @@ BUILD_BUG_ON(1)
 
 /*
  * Keeping the fields ordered by size is an attempt at improving
- * branch prediction in vmcs_read_any and vmcs_write_any.
+ * branch prediction in vmcs12_read_any and vmcs12_write_any.
  */
 
 /* 16-bits */

virt/kvm/kvm_main.c

@@ -1117,7 +1117,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
 		 *
 		 * validation of sp->gfn happens in:
 		 *	- gfn_to_hva (kvm_read_guest, gfn_to_pfn)
-		 *	- kvm_is_visible_gfn (mmu_check_roots)
+		 *	- kvm_is_visible_gfn (mmu_check_root)
 		 */
 		kvm_arch_flush_shadow_memslot(kvm, slot);