package/linux-headers: drop 6.14.x option

The 6.14.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 2025.08"
 
+config BR2_KERNEL_HEADERS_6_14
+	bool "kernel headers version 6.14.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 6.14.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 config BR2_PACKAGE_GPSD_OCEANSERVER
 	bool "gpsd OceanServer removed upstream"
 	select BR2_LEGACY

linux/linux.hash

@@ -1,6 +1,5 @@
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
 sha256  3458cd6a6c508e161dbc5406e72b99d5dbdf929faf704a67db9ba46d07514858  linux-6.15.2.tar.xz
-sha256  3f1ccd0a6dc9c9777cb6fcef357c77e4a2386c84c52b6d5bbcda79c16af33b1b  linux-6.14.11.tar.xz
 sha256  c0a575630f2603a20bb0641f8df8f955e46c9d7ac1fae8b54b21316e6b52a254  linux-6.12.33.tar.xz
 sha256  0d79ff359635e9f009f1e330deed5f3aefd8c452b80660bffdc504b877797719  linux-6.6.93.tar.xz
 sha256  bc3c45faf6f5f0450666c75fa9dad9bc7c0cf7c7cba0dbd94e5cfdc58229c116  linux-6.1.141.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_14
-	bool "Linux 6.14.x kernel headers"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_14
-
 config BR2_KERNEL_HEADERS_6_15
 	bool "Linux 6.15.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_15
@@ -454,7 +450,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "6.1.141"	if BR2_KERNEL_HEADERS_6_1
 	default "6.6.93"	if BR2_KERNEL_HEADERS_6_6
 	default "6.12.33"	if BR2_KERNEL_HEADERS_6_12
-	default "6.14.11"	if BR2_KERNEL_HEADERS_6_14
 	default "6.15.2"	if BR2_KERNEL_HEADERS_6_15
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
 	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL