selftests: exec: update gitignore for load_address

The name of the "load_address" objects has been modified, but the
corresponding entry in the gitignore file must be updated.

Update the load_address entry in the gitignore file to account for
the new names, adding an exception to keep on tracking load_address.c.

Signed-off-by: Javier Carrasco <[email protected]>
Signed-off-by: Shuah Khan <[email protected]>

Author: javiercarrascocruz

tools/testing/selftests/exec/.gitignore

@@ -9,7 +9,8 @@ execveat.ephemeral
 execveat.denatured
 non-regular
 null-argv
-/load_address_*
+/load_address.*
+!load_address.c
 /recursion-depth
 xxxxxxxx*
 pipe