linux-headers: bump 4.{9, 14}.x series

[Peter: drop 4.14.x bump]
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 985d1a03c394a947f38ec33254fba0488ba9518d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-headers/Config.in.host

@@ -224,5 +224,5 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "4.1.47"	if BR2_KERNEL_HEADERS_4_1
 	default "4.4.105"	if BR2_KERNEL_HEADERS_4_4
 	default "4.8.17"	if BR2_KERNEL_HEADERS_4_8
-	default "4.9.68"	if BR2_KERNEL_HEADERS_4_9
+	default "4.9.69"	if BR2_KERNEL_HEADERS_4_9
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION