specify x86_64 as the building architecture

Signed-off-by: chenmaodong <chenmaodong@huawei.com>

linux-sgx.spec

@@ -1,7 +1,8 @@
 Name:           linux-sgx
 Version:        2.11
-Release:        1
+Release:        2
 Summary:        Intel(R) Software Guard Extensions for Linux* OS
+ExclusiveArch:	x86_64
 License:        BSD License
 URL:            https://github.com/intel/linux-sgx
 Source0:        https://github.com/intel/linux-sgx/archive/sgx_%{version}.tar.gz
@@ -88,5 +89,8 @@ rm -rf /opt/sgx_linux_x64_sdk_2.11.100.2.bin
 
 
 %changelog
+* Mon Jan 18 2021 chenmaodong <chenmaodong@huawei.com> - 2.11-2
+- fix arm building error
+
 * Thu Dec 29 2020 chenmaodong <chenmaodong@huawei.com> - 2.11-1
 - init