[ALSA] make CONFIG_SND_DYNAMIC_MINORS non-experimental

The dynamic minors code is mature, has been tested, and seems to work
fine.
Signed-off-by: NClemens Ladisch <clemens@ladisch.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

sound/core/Kconfig

@@ -122,8 +122,8 @@ config SND_SEQ_RTCTIMER_DEFAULT
 	  If in doubt, say Y.
 
 config SND_DYNAMIC_MINORS
-	bool "Dynamic device file minor numbers (EXPERIMENTAL)"
-	depends on SND && EXPERIMENTAL
+	bool "Dynamic device file minor numbers"
+	depends on SND
 	help
 	  If you say Y here, the minor numbers of ALSA device files in
 	  /dev/snd/ are allocated dynamically.  This allows you to have