package/linux-headers: drop 6.17.x option

The 6.17.x series is now EOL upstream, so drop the linux-headers
option and add legacy handling for it.

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>

Config.in.legacy

@@ -146,6 +146,13 @@ endif
 
 comment "Legacy options removed in 2026.02"
 
+config BR2_KERNEL_HEADERS_6_17
+	bool "kernel headers version 6.17.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 6.17.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 config BR2_PACKAGE_MESA3D_VDPAU
 	bool "mesa3d Gallium VDPAU state tracker support removed"
 	select BR2_LEGACY

linux/linux.hash

@@ -1,6 +1,5 @@
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
 sha256  558c6bbab749492b34f99827fe807b0039a744693c21d3a7e03b3a48edaab96a  linux-6.18.2.tar.xz
-sha256  116802dc3ad1646163cc6ffe9bddba24a8069b569135ec0523cd799064f2edb9  linux-6.17.13.tar.xz
 sha256  9502c5ffe4b894383c97abfccf74430a84732f04ee476b9c0d87635b29df7db3  linux-6.12.63.tar.xz
 sha256  3da09b980bb404cc28793479bb2d6c636522679215ffa65a04c893575253e5e8  linux-6.6.119.tar.xz
 sha256  1f207ebe93980829ecc0a18b694816f22b715e9893767731651969a168342b9e  linux-6.1.159.tar.xz

package/linux-headers/Config.in.host

@@ -48,10 +48,6 @@ config BR2_KERNEL_HEADERS_6_12
 	bool "Linux 6.12.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_12
 
-config BR2_KERNEL_HEADERS_6_17
-	bool "Linux 6.17.x kernel headers"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_17
-
 config BR2_KERNEL_HEADERS_6_18
 	bool "Linux 6.18.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_18
@@ -465,7 +461,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "6.1.159"	if BR2_KERNEL_HEADERS_6_1
 	default "6.6.119"	if BR2_KERNEL_HEADERS_6_6
 	default "6.12.63"	if BR2_KERNEL_HEADERS_6_12
-	default "6.17.13"	if BR2_KERNEL_HEADERS_6_17
 	default "6.18.2"	if BR2_KERNEL_HEADERS_6_18
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
 	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL