drivers/gpu/drm/ast: remove depends on CONFIG_EXPERIMENTAL

The CONFIG_EXPERIMENTAL config item has not carried much meaning for a
while now and is almost always enabled by default. As agreed during the
Linux kernel summit, remove it from any "depends on" lines in Kconfigs.

CC: Dave Airlie <[e-mail]>
Signed-off-by: Kees Cook <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/gpu/drm/ast/Kconfig

···
 config DRM_AST
 	tristate "AST server chips"
-	depends on DRM && PCI && EXPERIMENTAL
+	depends on DRM && PCI
 	select DRM_TTM
 	select FB_SYS_COPYAREA
 	select FB_SYS_FILLRECT