[Qemu-trivial] [PATCH] qemu-doc: Add the paragraph about the -no-frame deprecation again

[Thomas Huth]

The section has accidentially been removed while resolving a
contextual conflict during a rebase, so add this again.

Fixes: f29d4450428fe07e9d6b0655cef2e59bfa0b2ea5
Signed-off-by: Thomas Huth <address@hidden>
---
 NB: I also slightly changed the wording and removed the "SDL 2.0 lacks
 support for frameless windows" part - AFAIK it can do frameless windows
 with the SDL_WINDOW_BORDERLESS flag for SDL_CreateWindow().

 qemu-doc.texi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/qemu-doc.texi b/qemu-doc.texi
index 39e38c8..031f443 100644
--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -2728,6 +2728,12 @@ filesystem test suite. Also it requires the 
CAP_DAC_READ_SEARCH capability,
 which is not the recommended way to run QEMU. This backend should not be
 used and it will be removed with no replacement.
 
address@hidden -no-frame (since 2.12.0)
+
+The @code{--no-frame} argument works with SDL 1.2 only. The other user
+interfaces never implemented this in the first place. So this will be
+removed together with SDL 1.2 support.
+
 @subsection -rtc-td-hack (since 2.12.0)
 
 The @code{-rtc-td-hack} option has been replaced by
-- 
1.8.3.1