feat: add a simple test to generate a EL3 panic

Add a simple patch which would generate a el3 panic from bl31_main
Cleanup and use crash-report tf-a config for bl31_main panic scenario.

Change-Id: Id9870210f3aef0886cd82e7ae5e0e14e82167367
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
diff --git a/patch/fault_inject/induce_bl31_main_panic.patch b/patch/fault_inject/induce_bl31_main_panic.patch
new file mode 100644
index 0000000..55fc417
--- /dev/null
+++ b/patch/fault_inject/induce_bl31_main_panic.patch
@@ -0,0 +1,13 @@
+diff --git a/bl31/bl31_main.c b/bl31/bl31_main.c
+index e70eb5584..3fb1e14b3 100644
+--- a/bl31/bl31_main.c
++++ b/bl31/bl31_main.c
+@@ -196,6 +196,8 @@ void bl31_main(void)
+ 	 * from BL31
+ 	 */
+ 	bl31_plat_runtime_setup();
++
++	panic();
+ }
+ 
+ /*******************************************************************************