Updated the GIT tree

Hi

I did some initial updates to prepare tree for v22 changes:

* Rebased https://github.com/intel/linux-sgx.git to v5.3-rc3.
* Fixed one merge conflict resulting from ioctl-number.txt being replaced with ioctl-number.rst.
* Removed changes from "x86/cpu/intel: Detect SGX support" that were leaked to the commit by mistake.
* Do not naturally align @addr and @len in sgx_get_unmapped_area().
* Check the kconfig flag INTEL_SGX_DRIVER in sgx_init() instead of defining two versions of sgx_drv_init().

/Jarkko