Add jhb's Wireguard entry

2022q1/ocf-wg.adoc

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+=== Kernel Crypto changes to support WireGuard
+
+During the last quarter, I continued my work to improve the FreeBSD
+WireGuard driver.  On the FreeBSD side, I added support for the
+XChaCha20-Poly1305 AEAD cipher.  I also added a dedicated API to support
+[X]ChaCha20-Poly1035 on small, flat buffers.  Finally, I added an API
+wrapper for the curve25519 implementation from libsodium.
+
+For the WireGuard driver, I wrote a series of patches which updates the
+driver to use crypto APIs such as those mentioned above in place of
+internal cipher implementations.  The series also includes a fix to
+avoid scheduling excessive crypto tasks as well as a few other small
+fixes.  This series is pending review.
+
+Sponsor: The FreeBSD Foundation