{linux, linux-headers}: bump 5.15.x / 6.{1, 4}.x series

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 15aae1902a3d47caa29bfb997a82a72194c79396)
[Peter: drop 6.4.x bump]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

linux/linux.hash

@@ -1,8 +1,8 @@
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
 sha256  ea460560e2898022c5f3c4649908694dcd75a094ffde726e8c6ca5e0a09491fb  linux-6.3.13.tar.xz
-sha256  4cddee22fdf657138a06af653492f67cd3a4762c04a34725534bd200d99085b8  linux-6.1.39.tar.xz
+sha256  43eafc2197a07dcdcff7a7ef79ac7502061f7c564744e51626bf5fa2e22587f0  linux-6.1.40.tar.xz
 # From https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
-sha256  6499089eae6b271063cb3e873ab7f4ba0543cfb21dcc9c54d9bcf5357db683f6  linux-5.15.120.tar.xz
+sha256  07e0cebdb00d25459683e9c330a0576349b8c5e5f2abf053b864f9909151c31d  linux-5.15.121.tar.xz
 sha256  1e60296a135d272bb7ce645f6ae68fbd4ffd1972cb4b82c38c6faa1172481be3  linux-5.10.186.tar.xz
 sha256  dc5458462c6edbe3473fc6dee80fbe0841df7c177fe0546c2f131e5918f5351d  linux-5.4.249.tar.xz
 # From https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc

package/linux-headers/Config.in.host

@@ -400,8 +400,8 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "4.19.288"	if BR2_KERNEL_HEADERS_4_19
 	default "5.4.249"	if BR2_KERNEL_HEADERS_5_4
 	default "5.10.186"	if BR2_KERNEL_HEADERS_5_10
-	default "5.15.120"	if BR2_KERNEL_HEADERS_5_15
-	default "6.1.39"	if BR2_KERNEL_HEADERS_6_1
+	default "5.15.121"	if BR2_KERNEL_HEADERS_5_15
+	default "6.1.40"	if BR2_KERNEL_HEADERS_6_1
 	default "6.3.13"	if BR2_KERNEL_HEADERS_6_3
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
 	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL