[ALSA] sound: emuproc.c fix signedness warning

Reading regs from the fpga into an int instead of a u32, trivial
fix.
sound/pci/emu10k1/emuproc.c:422:34: warning: incorrect type in argument 3 (different signedness)
sound/pci/emu10k1/emuproc.c:422:34:    expected unsigned int [usertype] *value
sound/pci/emu10k1/emuproc.c:422:34:    got int *<noident>
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emuproc.c

@@ -412,7 +412,7 @@ static void snd_emu_proc_emu1010_reg_read(struct snd_info_entry *entry,
 				     struct snd_info_buffer *buffer)
 {
 	struct snd_emu10k1 *emu = entry->private_data;
-	int value;
+	u32 value;
 	unsigned long flags;
 	int i;
 	snd_iprintf(buffer, "EMU1010 Registers:\n\n");