package/linux-headers: drop 4.19.x option

The 4.19.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 2025.02"
 
+config BR2_KERNEL_HEADERS_4_19
+	bool "kernel headers version 4.19.x are no longer supported"
+	select BR2_LEGACY
+	help
+	  Version 4.19.x of the Linux kernel headers are no longer
+	  maintained upstream and are now removed.
+
 config BR2_KERNEL_HEADERS_6_11
 	bool "kernel headers version 6.11.x are no longer supported"
 	select BR2_LEGACY

linux/linux.hash

@@ -6,8 +6,6 @@ sha256  aecdaf39d0a844a81ce4c67d9daff8979e938bb690df4f679fbbb494fe423278  linux-
 sha256  8a4b2a47ccc9b208b2b6ed9a216ea1a5eb12852c723bec1a04de9e671a1d7da8  linux-5.15.173.tar.xz
 sha256  cd1850ef3b771886df4e0b4c4eb07033864abab2bb553a20fd9e3cdc23584b47  linux-5.10.230.tar.xz
 sha256  180754f3df0e8d7f206625255b3f5a6e1f441feec83336df42613ca8f6b1887c  linux-5.4.286.tar.xz
-# From https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc
-sha256  607bed7de5cda31a443df4c8a78dbe5e8a9ad31afde2a4d28fe99ab4730e8de1  linux-4.19.325.tar.xz
 # Locally computed
 sha256  fb0edc3c18e47d2b6974cb0880a0afb5c3fa08f50ee87dfdf24349405ea5f8ae  linux-cip-5.10.162-cip24.tar.gz
 sha256  b5539243f187e3d478d76d44ae13aab83952c94b885ad889df6fa9997e16a441  linux-cip-5.10.162-cip24-rt10.tar.gz

package/linux-headers/Config.in.host

@@ -24,10 +24,6 @@ config BR2_KERNEL_HEADERS_AS_KERNEL
 	depends on BR2_LINUX_KERNEL
 	select BR2_KERNEL_HEADERS_LATEST if BR2_LINUX_KERNEL_LATEST_VERSION
 
-config BR2_KERNEL_HEADERS_4_19
-	bool "Linux 4.19.x kernel headers"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
-
 config BR2_KERNEL_HEADERS_5_4
 	bool "Linux 5.4.x kernel headers"
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_4
@@ -432,7 +428,6 @@ endchoice
 
 config BR2_DEFAULT_KERNEL_HEADERS
 	string
-	default "4.19.325"	if BR2_KERNEL_HEADERS_4_19
 	default "5.4.286"	if BR2_KERNEL_HEADERS_5_4
 	default "5.10.230"	if BR2_KERNEL_HEADERS_5_10
 	default "5.15.173"	if BR2_KERNEL_HEADERS_5_15