cros_bundle_firmware: Use sign_nv_cbootimage instead of nv_pkc_signing

CQ-DEPEND=CL:325370, CL:325381
BUG=chrome-os-partner:43018
BRANCH=None
TEST=Verified that signed image boots on dev-fused system

Change-Id: I51cc4e828b73ec66cc05407d31087fba0d722c7c
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://chromium-review.googlesource.com/325382
Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>

host/cros_bundle_firmware

diff --git a/host/cros_bundle_firmware b/host/cros_bundle_firmware
index 88a8927..940ac51 100755
--- a/host/cros_bundle_firmware
+++ b/host/cros_bundle_firmware
@@ -254,8 +254,8 @@
 
 def _RunPostProcessScript(options, output, tools):
   if options.board == "smaug":
-    args = [options.key, options.output]
-    tools.Run('nv_pkc_signing.sh', args)
+    args = ['bootloader', options.key + '/nv_pkc.pem', options.output, 'tegra210']
+    tools.Run('sign_nv_cbootimage.sh', args)
 
 def _Test():
   """Run any built-in tests."""