package/linux-headers: drop 6.7.x option

The 6.7.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: Arnout Vandecappelle <arnout@mind.be>

Config.in.legacy

@@ -146,6 +146,13 @@ endif
 
 comment "Legacy options removed in 2024.05"
 
+config BR2_KERNEL_HEADERS_6_7
+	bool "kernel headers version 6.7.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 6.7.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 config BR2_TARGET_TI_K3_IMAGE_GEN
 	bool "ti-k3-image-gen removed"
 	select BR2_LEGACY

linux/linux.hash

@@ -1,6 +1,5 @@
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
 sha256  8d0c8936e3140a0fbdf511ad7a9f21121598f3656743898f47bb9052d37cff68  linux-6.8.1.tar.xz
-sha256  a9b99fb376f9fcd699c7c252aeef3bb5ba26280eb049711ac091b2eb2b487c03  linux-6.7.10.tar.xz
 sha256  23e3e7b56407250f5411bdab95763d0bc4e3a19dfa431d951df7eacabd61a2f4  linux-6.6.22.tar.xz
 sha256  d150d2d9d416877668d8b56f75759f166168d192419eefaa942ed67225cbec06  linux-6.1.82.tar.xz
 # From https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc

package/linux-headers/Config.in.host

@@ -48,10 +48,6 @@ config BR2_KERNEL_HEADERS_6_6
 	bool "Linux 6.6.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_6
 
-config BR2_KERNEL_HEADERS_6_7
-	bool "Linux 6.7.x kernel headers"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_7
-
 config BR2_KERNEL_HEADERS_6_8
 	bool "Linux 6.8.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_8
@@ -425,7 +421,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "5.15.152"	if BR2_KERNEL_HEADERS_5_15
 	default "6.1.82"	if BR2_KERNEL_HEADERS_6_1
 	default "6.6.22"	if BR2_KERNEL_HEADERS_6_6
-	default "6.7.10"	if BR2_KERNEL_HEADERS_6_7
 	default "6.8.1"		if BR2_KERNEL_HEADERS_6_8
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
 	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL