hash: Add SHA-NI implementation of SHA-256 (#15152)

* hash: Add SSE2 implementation of SHA-256

Implementation taken from
tarsnap/libcperciva@661752aee82dcc8070754e3e539fdc7782bd

hash: Add SHA-NI implementation of SHA-256 (#15152)

* hash: Add SSE2 implementation of SHA-256

Implementation taken from
tarsnap/libcperciva@661752aee82dcc8070754e3e539fdc7782bd3942.

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>
Co-authored-by: Niels Dossche <7771979+nielsdos@users.noreply.github.com>

* zend_cpuinfo: Add ZEND_CPU_FEATURE_SHA

* hash: Add SHA-NI implementation of SHA-256

Implementation taken from
tarsnap/libcperciva@661752aee82dcc8070754e3e539fdc7782bd3942.

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

* NEWS / UPGRADING

---------

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>
Co-authored-by: Niels Dossche <7771979+nielsdos@users.noreply.github.com>

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