Enable SGX virtualization in default config

Intel inclusion
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5MJBR


CVE: NA

Intel-SIG: openeuler_defconfig: Enable configs for Intel SGX virtualization

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Enable necessary kernel configs for Intel SGX virtualization in openeuler_defconfig.

Reviewed-by: Zhiquan Li <zhiquan1.li@intel.com>
Signed-off-by: Jason Zeng <jason.zeng@intel.com>
Signed-off-by: Aichun Shi <aichun.shi@intel.com>