linux-headers: bump 4.{4, 9, 10}.x series

[Peter: drop 4.10.x update]
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit b718c776ca1a5d204f2ae9a765331a32e87e9560)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-headers/Config.in.host

@@ -222,7 +222,7 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "3.19.8"	if BR2_KERNEL_HEADERS_3_19
 	default "4.0.9"		if BR2_KERNEL_HEADERS_4_0
 	default "4.1.39"	if BR2_KERNEL_HEADERS_4_1
-	default "4.4.56"	if BR2_KERNEL_HEADERS_4_4
+	default "4.4.57"	if BR2_KERNEL_HEADERS_4_4
 	default "4.8.17"	if BR2_KERNEL_HEADERS_4_8
-	default "4.9.17"	if BR2_KERNEL_HEADERS_4_9
+	default "4.9.18"	if BR2_KERNEL_HEADERS_4_9
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION