systemc: Make verify.py ignore an Info: message.

This message is about how to disable a warning about sc_bit being
deprecated.

Change-Id: I1a0b12e2ca5b58328e37605ba3f7e3e1a384e351
Reviewed-on: https://gem5-review.googlesource.com/12064
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>

src/systemc/tests/verify.py

@@ -198,7 +198,9 @@ class LogChecker(Checker):
         r'^\nInfo: /OSCI/SystemC: Simulation stopped by user.\n',
         r'^SystemC Simulation\n',
         warning_filt(571),
-        warning_filt(540)
+        warning_filt(540),
+        r'^\nInfo: \(I804\) /IEEE_Std_1666/deprecated: ' +
+        r'You can turn off(.*\n){7}'
     )
     test_filt = merge_filts(
         r'^Global frequency set at \d* ticks per second\n'