MAINTAINERS: Extend Samsung patterns to cover SPI and ASoC drivers

Help people find the overall architecture.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

MAINTAINERS

@@ -1064,6 +1064,8 @@ F:	arch/arm/mach-s3c24*/
 F:	arch/arm/mach-s3c64xx/
 F:	drivers/*/*s3c2410*
 F:	drivers/*/*/*s3c2410*
+F:	drivers/spi/spi-s3c*
+F:	sound/soc/samsung/*
 
 ARM/S5P EXYNOS ARM ARCHITECTURES
 M:	Kukjin Kim <kgene.kim@samsung.com>