Kernel 5.15.82 added a prompt for the FUNCTION_ERROR_INJECTION symbol.
This is exposed in builds with CONFIG_KERNEL_KPROBES enabled, causing
those builds to fail due to a missing symbol. Add the symbol to fix
this.
Fixes: 68426e54ed ("kernel: bump 5.15 to 5.15.82")
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>