SDL: KMSDRM on Dragonfly BSD doesn't work without being root

From ddc6be355965c2cd2782ab9c2620902b1b5b6021 Mon Sep 17 00:00:00 2001
From: Cacodemon345 <[EMAIL REDACTED]>
Date: Wed, 12 May 2021 20:43:10 +0600
Subject: [PATCH] KMSDRM on Dragonfly BSD doesn't work without being root

---
 docs/README-kmsbsd.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/README-kmsbsd.md b/docs/README-kmsbsd.md
index e731c7c09..01db5e8aa 100644
--- a/docs/README-kmsbsd.md
+++ b/docs/README-kmsbsd.md
@@ -1,7 +1,7 @@
 KMSDRM on *BSD
 ==================================================
 
-KMSDRM is supported on FreeBSD and OpenBSD. DragonFlyBSD is not tested yet, but should work. NetBSD isn't supported yet because the application will crash when creating the KMSDRM screen.
+KMSDRM is supported on FreeBSD and OpenBSD. DragonFlyBSD works but requires being a root user. NetBSD isn't supported yet because the application will crash when creating the KMSDRM screen.
 
 WSCONS support has been brought back, but only as an input backend. It will not be brought back as a video backend to ease maintenance.