selftests: drv-net: pp_alloc_fail: add necessary optoins to config

Add kernel config for error injection as needed by pp_alloc_fail.py

Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 9da271f ("selftests: drv-net-hw: add test for memory allocation failures with page pool")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20251007232653.2099376-10-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Author: kuba-moo

tools/testing/selftests/drivers/net/hw/config

@@ -1,3 +1,7 @@
+CONFIG_FAIL_FUNCTION=y
+CONFIG_FAULT_INJECTION=y
+CONFIG_FAULT_INJECTION_DEBUG_FS=y
+CONFIG_FUNCTION_ERROR_INJECTION=y
 CONFIG_IO_URING=y
 CONFIG_IPV6=y
 CONFIG_IPV6_GRE=y