{linux, linux-headers}: bump 4.{4, 9, 14, 19, 20}.x series

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit e4bbdeec9d2a9e46041d48d14fe45dcca03bb480)
[Peter: drop 4.19.x/4.20.x, linux / hash changes]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-headers/Config.in.host

@@ -250,12 +250,12 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	string
 	default "3.2.102"	if BR2_KERNEL_HEADERS_3_2
 	default "4.1.52"	if BR2_KERNEL_HEADERS_4_1
-	default "4.4.172"	if BR2_KERNEL_HEADERS_4_4
-	default "4.9.153"	if BR2_KERNEL_HEADERS_4_9
+	default "4.4.174"	if BR2_KERNEL_HEADERS_4_4
+	default "4.9.156"	if BR2_KERNEL_HEADERS_4_9
 	default "4.10.17"	if BR2_KERNEL_HEADERS_4_10
 	default "4.11.12"	if BR2_KERNEL_HEADERS_4_11
 	default "4.12.14"	if BR2_KERNEL_HEADERS_4_12
 	default "4.13.16"	if BR2_KERNEL_HEADERS_4_13
-	default "4.14.96"	if BR2_KERNEL_HEADERS_4_14
+	default "4.14.99"	if BR2_KERNEL_HEADERS_4_14
 	default "4.15.18"	if BR2_KERNEL_HEADERS_4_15
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION