Install modules in kernel deb

Change-Id: I8f0c831ac55b8615bd49a773b090db8d1c48c6fa
diff --git a/debian/rules b/debian/rules
index 6959042..afc2ffe 100755
--- a/debian/rules
+++ b/debian/rules
@@ -27,9 +27,10 @@
 	true
 
 override_dh_auto_build:
-	+make ${KERNEL_OPTIONS} mt8167s_excelsior_defconfig
-	+make ${KERNEL_OPTIONS} -j$(shell nproc) Image modules dtbs
-	${CROSS_COMPILE}objcopy -O binary -R .note -R .comment -S vmlinux linux.bin
+	+make $(KERNEL_OPTIONS) mt8167s_excelsior_defconfig
+	+make $(KERNEL_OPTIONS) olddefconfig
+	+make $(KERNEL_OPTIONS) -j$(shell nproc) Image modules dtbs
+	$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S vmlinux linux.bin
 
 	/boot/compress_lz4.sh linux.bin
 
@@ -37,5 +38,9 @@
 	mtk-mkimage -D "-I dts -O dtb -p 1024" -k /boot/keys -f kernel-fit-image.its boot.img
 
 override_dh_auto_install:
+	+make $(KERNEL_OPTIONS) INSTALL_MOD_PATH=$(DESTDIR) modules_install
+	rm $(DESTDIR)/lib/modules/$(VERSION)/build
+	rm $(DESTDIR)/lib/modules/$(VERSION)/source
+
 	install -d $(DESTDIR)/boot
 	install -p -m 655 boot.img $(DESTDIR)/boot