[dv, flash_ctrl] Fix the tl_intg error test

Just had to fix the name of the alert signal used for tl intg failure.

Signed-off-by: Srikrishna Iyer <sriyer@google.com>
diff --git a/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv b/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
index c8ac3d7..fc02caa 100644
--- a/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
+++ b/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
@@ -26,6 +26,7 @@
 
   virtual function void initialize(bit [TL_AW-1:0] csr_base_addr = '1);
     list_of_alerts = flash_ctrl_env_pkg::LIST_OF_ALERTS;
+    tl_intg_alert_name = "fatal_intg_err";
     super.initialize(csr_base_addr);
     // create tl agent config obj
     m_eflash_tl_agent_cfg = tl_agent_cfg::type_id::create("m_eflash_tl_agent_cfg");