MAINTAINERS: add networking entries for Willem

We often have to ping Willem asking for reviews of patches
because he doesn't get included in the CC list. Add MAINTAINERS
entries for some of the areas he covers so that ./scripts/ will
know to add him.

Acked-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Link: https://lore.kernel.org/r/20230117190141.60795-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS

@@ -15748,6 +15748,12 @@ S:	Maintained
 W:	https://wireless.wiki.kernel.org/en/users/Drivers/p54
 F:	drivers/net/wireless/intersil/p54/
 
+PACKET SOCKETS
+M:	Willem de Bruijn <willemdebruijn.kernel@gmail.com>
+S:	Maintained
+F:	include/uapi/linux/if_packet.h
+F:	net/packet/af_packet.c
+
 PACKING
 M:	Vladimir Oltean <olteanv@gmail.com>
 L:	netdev@vger.kernel.org
@@ -19324,6 +19330,13 @@ L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Orphan
 F:	sound/soc/uniphier/
 
+SOCKET TIMESTAMPING
+M:	Willem de Bruijn <willemdebruijn.kernel@gmail.com>
+S:	Maintained
+F:	Documentation/networking/timestamping.rst
+F:	include/uapi/linux/net_tstamp.h
+F:	tools/testing/selftests/net/so_txtime.c
+
 SOEKRIS NET48XX LED SUPPORT
 M:	Chris Boot <bootc@bootc.net>
 S:	Maintained
@@ -21744,6 +21757,13 @@ T:	git git://linuxtv.org/media_tree.git
 F:	Documentation/admin-guide/media/zr364xx*
 F:	drivers/staging/media/deprecated/zr364xx/
 
+USER DATAGRAM PROTOCOL (UDP)
+M:	Willem de Bruijn <willemdebruijn.kernel@gmail.com>
+S:	Maintained
+F:	include/linux/udp.h
+F:	net/ipv4/udp.c
+F:	net/ipv6/udp.c
+
 USER-MODE LINUX (UML)
 M:	Richard Weinberger <richard@nod.at>
 M:	Anton Ivanov <anton.ivanov@cambridgegreys.com>