cros_generate_breakpad_symbols: pass dump_syms the new -v flag

The dump_syms tool was updated to be less verbose by default, but we rely
on parsing its error message to handle missing symbols.  Pass the -v flag
down so we get the full output.

BUG=chromium:579384
TEST=unittests pass
TEST=generating symbols for lakitu doesn't fail
CQ-DEPEND=CL:323010

Change-Id: I8a540056633ad148ccc60db2bf55401562dc00c3
Reviewed-on: https://chromium-review.googlesource.com/324241
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Rahul Chaudhry <rahulchaudhry@chromium.org>
diff --git a/scripts/cros_generate_breakpad_symbols.py b/scripts/cros_generate_breakpad_symbols.py
index 92a242e..8c41074 100644
--- a/scripts/cros_generate_breakpad_symbols.py
+++ b/scripts/cros_generate_breakpad_symbols.py
@@ -82,7 +82,7 @@
   if num_errors is None:
     num_errors = ctypes.c_int()
 
-  cmd_base = [dump_syms_cmd]
+  cmd_base = [dump_syms_cmd, '-v']
   if strip_cfi:
     cmd_base += ['-c']
   # Some files will not be readable by non-root (e.g. set*id /bin/su).