kdump: T8868: Enable crash dump and debug info in kernel configs

Enabling the following options allows us to use `kdump-tools`:
  - `CONFIG_CRASH_DUMP`
  - `CONFIG_DEBUG_INFO`
  - `CONFIG_PROC_VMCORE`

Author: alexandr-san4ez

scripts/package-build/linux-kernel/config/arm64/vyos_defconfig

@@ -241,7 +241,9 @@ CONFIG_KEXEC_CORE=y
 CONFIG_KEXEC=y
 CONFIG_KEXEC_FILE=y
 CONFIG_KEXEC_SIG=y
-# CONFIG_CRASH_DUMP is not set
+CONFIG_CRASH_DUMP=y
+CONFIG_DEBUG_INFO=y
+CONFIG_PROC_VMCORE=y
 # end of Kexec and crash features
 # end of General setup
 

scripts/package-build/linux-kernel/config/x86/vyos_defconfig

@@ -260,7 +260,9 @@ CONFIG_KEXEC_CORE=y
 CONFIG_KEXEC=y
 CONFIG_KEXEC_FILE=y
 CONFIG_KEXEC_SIG=y
-# CONFIG_CRASH_DUMP is not set
+CONFIG_CRASH_DUMP=y
+CONFIG_DEBUG_INFO=y
+CONFIG_PROC_VMCORE=y
 # end of Kexec and crash features
 # end of General setup