KVM: selftests: Add ENCLS_EXITING_BITMAP{,HIGH} VMCS fields

The updated Enlightened VMCS definition has 'encls_exiting_bitmap'
field which needs mapping to VMCS, add the missing encoding.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220830133737.1539624-13-vkuznets@redhat.comSigned-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/include/x86_64/vmx.h

@@ -208,6 +208,8 @@ enum vmcs_field {
 	VMWRITE_BITMAP_HIGH		= 0x00002029,
 	XSS_EXIT_BITMAP			= 0x0000202C,
 	XSS_EXIT_BITMAP_HIGH		= 0x0000202D,
+	ENCLS_EXITING_BITMAP		= 0x0000202E,
+	ENCLS_EXITING_BITMAP_HIGH	= 0x0000202F,
 	TSC_MULTIPLIER			= 0x00002032,
 	TSC_MULTIPLIER_HIGH		= 0x00002033,
 	GUEST_PHYSICAL_ADDRESS		= 0x00002400,