Hacks for 4.13 support

Author: fourkbomb

package/linux-headers/Config.in.host

@@ -92,6 +92,10 @@ choice
 	  This is used to hide/show some packages that have strict
 	  requirements on the version of kernel headers.
 
+config BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_13
+	bool "4.13.x"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
+
 config BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_12
 	bool "4.12.x"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12

package/linux-headers/linux-headers.mk

@@ -126,7 +126,7 @@ ifeq ($(BR2_KERNEL_HEADERS_VERSION)$(BR2_KERNEL_HEADERS_AS_KERNEL),y)
 define LINUX_HEADERS_CHECK_VERSION
 	$(call check_kernel_headers_version,\
 		$(STAGING_DIR),\
-		$(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)))
+		4.13.0)
 endef
 LINUX_HEADERS_POST_INSTALL_STAGING_HOOKS += LINUX_HEADERS_CHECK_VERSION
 endif