[ALSA] Kconfig: cleanup sound menu

ALSA Core
This properly indents the sound menu.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/Kconfig

 # ALSA soundcard-configuration
 config SND_TIMER
 	tristate
+	depends on SND
 
 config SND_PCM
 	tristate
 	select SND_TIMER
+	depends on SND
 
 config SND_HWDEP
 	tristate
+	depends on SND
 
 config SND_RAWMIDI
 	tristate
+	depends on SND
 
 config SND_SEQUENCER
 	tristate "Sequencer support"
@@ -40,6 +44,7 @@ config SND_SEQ_DUMMY
 
 config SND_OSSEMUL
 	bool
+	depends on SND
 
 config SND_MIXER_OSS
 	tristate "OSS Mixer API"
@@ -70,7 +75,7 @@ config SND_PCM_OSS
 
 config SND_SEQUENCER_OSS
 	bool "OSS Sequencer API"
-	depends on SND_SEQUENCER
+	depends on SND && SND_SEQUENCER
 	select SND_OSSEMUL
 	help
 	  Say Y here to enable OSS sequencer emulation (both
@@ -125,3 +130,4 @@ config SND_DEBUG_DETECT
 
 config SND_GENERIC_PM
 	bool
+	depends on SND