drm/docs: Move "scaling mode" property.

The "scaling mode" property has been moved to the DRM->Generic.
It has also had a list of supported drivers added to it.
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NRobert Foss <robert.foss@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462216381-10160-1-git-send-email-robert.foss@collabora.com

Documentation/DocBook/gpu.tmpl

@@ -1817,7 +1817,7 @@ void intel_crt_init(struct drm_device *dev)
 	</tr>
 	<tr>
 	<td rowspan="42" valign="top" >DRM</td>
-	<td valign="top" >Generic</td>
+	<td rowspan="2" valign="top" >Generic</td>
 	<td valign="top" >“rotation”</td>
 	<td valign="top" >BITMASK</td>
 	<td valign="top" >{ 0, "rotate-0" },
@@ -1832,6 +1832,13 @@ void intel_crt_init(struct drm_device *dev)
 	image along the specified axis prior to rotation</td>
 	</tr>
 	<tr>
+	<td valign="top" >“scaling mode”</td>
+	<td valign="top" >ENUM</td>
+	<td valign="top" >{ "None", "Full", "Center", "Full aspect" }</td>
+	<td valign="top" >Connector</td>
+	<td valign="top" >Supported by: amdgpu, gma500, i915, nouveau and radeon.</td>
+	</tr>
+	<tr>
 	<td rowspan="5" valign="top" >Connector</td>
 	<td valign="top" >“EDID”</td>
 	<td valign="top" >BLOB | IMMUTABLE</td>
@@ -2068,21 +2075,12 @@ void intel_crt_init(struct drm_device *dev)
 	<td valign="top" >property to suggest an Y offset for a connector</td>
 	</tr>
 	<tr>
-	<td rowspan="8" valign="top" >Optional</td>
-	<td valign="top" >“scaling mode”</td>
-	<td valign="top" >ENUM</td>
-	<td valign="top" >{ "None", "Full", "Center", "Full aspect" }</td>
-	<td valign="top" >Connector</td>
-	<td valign="top" >TBD</td>
-	</tr>
-	<tr>
+	<td rowspan="7" valign="top" >Optional</td>
 	<td valign="top" >"aspect ratio"</td>
 	<td valign="top" >ENUM</td>
 	<td valign="top" >{ "None", "4:3", "16:9" }</td>
 	<td valign="top" >Connector</td>
-	<td valign="top" >DRM property to set aspect ratio from user space app.
-		This enum is made generic to allow addition of custom aspect
-		ratios.</td>
+	<td valign="top" >TDB</td>
 	</tr>
 	<tr>
 	<td valign="top" >“dirty”</td>