brcm2708: Move kmod-sound-soc-3dlab-nano-player to sound modules

kmod-sound-soc-3dlab-nano-player was in the global kernel menu before,
add the dependency to sound to move it to the correct category.

Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/brcm2708/modules.mk

@@ -95,6 +95,7 @@ define KernelPackage/sound-soc-3dlab-nano-player
 	@LINUX_4_14 \
 	kmod-sound-soc-bcm2835-i2s \
 	+kmod-regmap-i2c
+  $(call AddDepends/sound)
 endef
 
 define KernelPackage/sound-soc-3dlab-nano-player/description