kernel: Make kernel depend on depmod

After moving modules to this target, we need to depend on depmod

Change-Id: I32ac51173db304cc019e45df006c26a2583b8587
diff --git a/build/tasks/kernel.mk b/build/tasks/kernel.mk
index 36352a5..a2bb3f4 100644
--- a/build/tasks/kernel.mk
+++ b/build/tasks/kernel.mk
@@ -236,7 +236,7 @@
 			$(call make-kernel-target,KCONFIG_ALLCONFIG=$(KERNEL_OUT)/.config alldefconfig); \
 		fi
 
-$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_CONFIG)
+$(TARGET_PREBUILT_INT_KERNEL): $(KERNEL_CONFIG) $(DEPMOD)
 	@echo "Building Kernel"
 	$(call make-kernel-target,$(BOARD_KERNEL_IMAGE_NAME))
 	$(hide) if grep -q '^CONFIG_OF=y' $(KERNEL_CONFIG); then \