!158 Intel SPR: SGX: Backport SGX EDMM support

Merge Pull Request from: @zhiquan1-li 
 
**Content:**
This PR includes incremental backporting patches which mainly covers [SGX EDMM](https://lore.kernel.org/linux-sgx/239f0f5692d9c00f3c9e0d5d58cd77d2e5ba5eb4.camel@kernel.org/T/#m5f94561a7fef3f33e9922a41f45e5dcf88ad9880) (Enclave Dynamic
Memory Management) support and its dependencies, as well as subsequent fix until upstream v6.0.

This total patch number is 54, it includes:
- SGX EDMM support (commit 22~52)
  [[PATCH V5 00/31] x86/sgx and selftests/sgx: Support SGX2](https://lore.kernel.org/linux-sgx/239f0f5692d9c00f3c9e0d5d58cd77d2e5ba5eb4.camel@kernel.org/T/#m5f94561a7fef3f33e9922a41f45e5dcf88ad9880)
- Its dependencies (commit 1~21)
- Subsequent bug fix until upstream v6.0 (commit 53~54)

**Intel-kernel issue:**
https://gitee.com/openeuler/intel-kernel/issues/I5USAM

**Test:**
1. Build successfully for each commits
2. Kernel selftest - SGX: PASSED
   (this patchset includes dedicated test cases against EDMM)
   ```sh
   cd tools/testing/selftests/sgx/
   make
   ./test_sgx
   ```
3. SGX internal stress test: No new failure

**Known issue:**
None

**Default config change:**
None 
 
Link:https://gitee.com/openeuler/kernel/pulls/158

 
Reviewed-by: Jun Tian <jun.j.tian@intel.com>
Reviewed-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>