efi_loader: handle EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS

We don't yet support EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS for file
based variables, but we should pass it to TEE based variable stores.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/include/efi.h b/include/efi.h
index 62cfb99..c3c4b93 100644
--- a/include/efi.h
+++ b/include/efi.h
@@ -507,7 +507,8 @@
 				EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
 				EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
 				EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
-				EFI_VARIABLE_APPEND_WRITE)
+				EFI_VARIABLE_APPEND_WRITE | \
+				EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS)
 
 /**
  * efi_get_priv() - Get access to the EFI-private information