package/linux-headers: drop 6.19.x option

The 6.19.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 2026.05"
 
+config BR2_KERNEL_HEADERS_6_19
+	bool "kernel headers version 6.19.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 6.19.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 config BR2_PACKAGE_PCRE
 	bool "pcre removed"
 	select BR2_LEGACY

linux/from-6.17/linux.hash

@@ -2,7 +2,6 @@
 sha256  b2c935a36d24980e11e59bed3ca558ea6d67619ec0065faa335cdc0b64d887bf  linux-7.0.1.tar.xz
 
 # From https://www.kernel.org/pub/linux/kernel/v6.x/sha256sums.asc
-sha256  cde8bf6739be4a0777fedbbba5330b8188c55680c45a922a4dfa289cbec6f185  linux-6.19.14.tar.xz
 sha256  c207c557ce58103b4dda30e26da5203f3d8467c6dadc53d709f6d83ae1d1255f  linux-6.18.24.tar.xz
 
 # Licenses hashes

package/linux-headers/6.19.14

@@ -1 +0,0 @@
-../../linux/from-6.17

package/linux-headers/Config.in.host

@@ -52,10 +52,6 @@ config BR2_KERNEL_HEADERS_6_18
 	bool "Linux 6.18.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_18
 
-config BR2_KERNEL_HEADERS_6_19
-	bool "Linux 6.19.x kernel headers"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_19
-
 config BR2_KERNEL_HEADERS_7_0
 	bool "Linux 7.0.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_7_0
@@ -478,7 +474,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "6.6.135"	if BR2_KERNEL_HEADERS_6_6
 	default "6.12.83"	if BR2_KERNEL_HEADERS_6_12
 	default "6.18.24"	if BR2_KERNEL_HEADERS_6_18
-	default "6.19.14"	if BR2_KERNEL_HEADERS_6_19
 	default "7.0.1"		if BR2_KERNEL_HEADERS_7_0
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
 	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL