[ALSA] Fix __devinit and __devexit issues with sound drivers

Fix __devinit and __devexit issues with sound drivers.
Resolves MODPOST warnings similar to:
WARNING: sound/drivers/snd-dummy.o - Section mismatch: reference to .init.text:snd_dummy_probe from .data.rel.local between 'snd_dummy_driver' (at offset 0x0) and 'snd_dummy_controls'
WARNING: sound/drivers/snd-mtpav.o - Section mismatch: reference to .init.text:snd_mtpav_probe from .data.rel.local between 'snd_mtpav_driver' (at offset 0x0) and 'snd_mtpav_input'
WARNING: sound/drivers/snd-virmidi.o - Section mismatch: reference to .init.text:snd_virmidi_probe from .data.rel.local after 'snd_virmidi_driver' (at offset 0x0)

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/isa/gus/gusclassic.c b/sound/isa/gus/gusclassic.c
index 37057a3..0395e2e 100644
--- a/sound/isa/gus/gusclassic.c
+++ b/sound/isa/gus/gusclassic.c
@@ -76,7 +76,7 @@
 
 #define PFX	"gusclassic: "
 
-static int __init snd_gusclassic_detect(struct snd_gus_card * gus)
+static int __devinit snd_gusclassic_detect(struct snd_gus_card * gus)
 {
 	unsigned char d;
 
@@ -95,7 +95,7 @@
 	return 0;
 }
 
-static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
+static void __devinit snd_gusclassic_init(int dev, struct snd_gus_card * gus)
 {
 	gus->equal_irq = 0;
 	gus->codec_flag = 0;
@@ -103,7 +103,7 @@
 	gus->joystick_dac = joystick_dac[dev];
 }
 
-static int __init snd_gusclassic_probe(struct platform_device *pdev)
+static int __devinit snd_gusclassic_probe(struct platform_device *pdev)
 {
 	int dev = pdev->id;
 	static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
@@ -211,7 +211,7 @@
 	return err;
 }
 
-static int snd_gusclassic_remove(struct platform_device *devptr)
+static int __devexit snd_gusclassic_remove(struct platform_device *devptr)
 {
 	snd_card_free(platform_get_drvdata(devptr));
 	platform_set_drvdata(devptr, NULL);
@@ -222,7 +222,7 @@
 
 static struct platform_driver snd_gusclassic_driver = {
 	.probe		= snd_gusclassic_probe,
-	.remove		= snd_gusclassic_remove,
+	.remove		= __devexit_p(snd_gusclassic_remove),
 	/* FIXME: suspend/resume */
 	.driver		= {
 		.name	= GUSCLASSIC_DRIVER