[RFC PATCH] support.md: add a link to matrix bridge to IRC

["Alex Bennée" <alex.bennee@linaro.org>]

We want users to be able to use newer tooling and not be stuck with
IRC like the rest of the fossils. As the #QEMU channel is bridged by
the matrix.org server lets point there as well. At least it's not
Slack.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 support.md | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/support.md b/support.md
index f6ee85c..252351c 100644
--- a/support.md
+++ b/support.md
@@ -33,10 +33,12 @@ want to send your question to another of [QEMU's mailing
 lists](https://wiki.qemu.org/MailingLists)
 
 * A lot of developers hang around on IRC (network: irc.oftc.net,
-channel #qemu).<br> QEMU developers tend to hold normal office hours
-and are distributed around the world. Please be patient as you may
-have to wait some time for a response. If you can't leave IRC open and
-wait you may be better served by a mailing list.
+channel #qemu, also available via
+[Matrix](https://matrix.to/#/#_oftc_#qemu:matrix.org)).<br> QEMU
+developers tend to hold normal office hours and are distributed around
+the world. Please be patient as you may have to wait some time for a
+response. If you can't leave IRC open and wait you may be better
+served by a mailing list.
 
 * If you think you have found a bug you can report it on [our bug
   tracker](https://bugs.launchpad.net/qemu/).<br>
-- 
2.20.1