riscv: stacktrace: Fix missing the first frame
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.1.12 by commit 12773070b09b8be2a396881a09f377bc2660cfa2, it was introduced in version v5.17 by commit 6a00ef4493706a23120057fafbc62379bcde11ec. For more details please see the references link.