fix stupid regression and allow kernel modules to be built again

mk/kernel-build.mk

@@ -6,10 +6,17 @@ include $(ADK_TOPDIR)/mk/$(ADK_TARGET_OS)-ver.mk
 include $(ADK_TOPDIR)/mk/$(ADK_TARGET_OS).mk
 include $(ADK_TOPDIR)/mk/kernel-vars.mk
 
-ifeq ($(ADK_TARGET_KERNEL_USE_CUSTOMCONFIG),y)
-KERNEL_MODULES_USED:=$(shell grep -s =m $(ADK_TOPDIR)/$(ADK_TARGET_KERNEL_CUSTOMCONFIG_PATH))
-else
-KERNEL_MODULES_USED:=$(shell grep ^ADK_$(ADK_TARGET_OS)_KERNEL $(ADK_TOPDIR)/.config|grep =m)
+ifeq ($(ADK_TARGET_OS_LINUX),y)
+KERNEL_MODULES_USED:=$(shell grep ^ADK_LINUX_KERNEL $(ADK_TOPDIR)/.config|grep =m)
+endif
+ifeq ($(ADK_TARGET_OS_WALDUX),y)
+KERNEL_MODULES_USED:=$(shell grep ^ADK_WALDUX_KERNEL $(ADK_TOPDIR)/.config|grep =m)
+endif
+ifeq ($(ADK_TARGET_LINUX_KERNEL_USE_CUSTOMCONFIG),y)
+KERNEL_MODULES_USED:=$(shell grep -s =m $(ADK_TOPDIR)/$(ADK_TARGET_LINUX_KERNEL_CUSTOMCONFIG_PATH))
+endif
+ifeq ($(ADK_TARGET_WALDUX_KERNEL_USE_CUSTOMCONFIG),y)
+KERNEL_MODULES_USED:=$(shell grep -s =m $(ADK_TOPDIR)/$(ADK_TARGET_WALDUX_KERNEL_CUSTOMCONFIG_PATH))
 endif
 
 KERNEL_FILE:=$(ADK_TARGET_KERNEL)