ARM: S3C64XX: Fix special function for IISv4 port

When converting to use s3c_gpio_cfgpin_range() the function for the
IISv4 block appears to have been typoed as 4 (the keypad) rather than
5 as it should be.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s3c64xx/dev-audio.c

@@ -48,7 +48,7 @@ static int s3c64xx_i2sv4_cfg_gpio(struct platform_device *pdev)
 	s3c_gpio_cfgpin(S3C64XX_GPC(4), S3C_GPIO_SFN(5));
 	s3c_gpio_cfgpin(S3C64XX_GPC(5), S3C_GPIO_SFN(5));
 	s3c_gpio_cfgpin(S3C64XX_GPC(7), S3C_GPIO_SFN(5));
-	s3c_gpio_cfgpin_range(S3C64XX_GPH(6), 4, S3C_GPIO_SFN(4));
+	s3c_gpio_cfgpin_range(S3C64XX_GPH(6), 4, S3C_GPIO_SFN(5));
 
 	return 0;
 }