MAINTAINERS: catch special Rockchip code locations

Add some more locations that aren't catched by the general wildcard.
This includes the devicetree files, clock directory, rk3x i2c driver,
everything in a third layer under drivers like iio/adc/rockchip_saradc.c
and the i2s driver.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

MAINTAINERS

@@ -1279,8 +1279,13 @@ M:	Heiko Stuebner <heiko@sntech.de>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 L:	linux-rockchip@lists.infradead.org
 S:	Maintained
+F:	arch/arm/boot/dts/rk3*
 F:	arch/arm/mach-rockchip/
+F:	drivers/clk/rockchip/
+F:	drivers/i2c/busses/i2c-rk3x.c
 F:	drivers/*/*rockchip*
+F:	drivers/*/*/*rockchip*
+F:	sound/soc/rockchip/
 
 ARM/SAMSUNG ARM ARCHITECTURES
 M:	Ben Dooks <ben-linux@fluff.org>