kernel: add STAGING_DIR_HOST/lib to host library search path

Signed-off-by: Felix Fietkau <nbd@nbd.name>

include/kernel-defaults.mk

@@ -20,6 +20,7 @@ KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
 	KBUILD_BUILD_HOST="$(call qstrip,$(CONFIG_KERNEL_BUILD_DOMAIN))" \
 	KBUILD_BUILD_TIMESTAMP="$(KBUILD_BUILD_TIMESTAMP)" \
 	KBUILD_BUILD_VERSION="0" \
+	HOST_LOADLIBES="-L$(STAGING_DIR_HOST)/lib" \
 	CONFIG_SHELL="$(BASH)" \
 	$(if $(findstring c,$(OPENWRT_VERBOSE)),V=1,V='') \
 	$(if $(PKG_BUILD_ID),LDFLAGS_MODULE=--build-id=0x$(PKG_BUILD_ID))