Revert "Disable importance of tegra2 until it goes green."
Revert "Disable importance of tegra2 until it goes green."

Revert this now that tegra2-binary has greenized.

This reverts commit 048bace83e32b2e91cc4fa877ca4f11b6ec21dc4

Change-Id: Ib91aab1113184716dd83d30c6fabc32903b156e5
Reviewed-on: http://gerrit.chromium.org/gerrit/3914
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Tested-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>

chadversary/chromiumos.chromite,coreos/chromite,chadversary/chromiumos.chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,coreos/chromite,coreos/chromite,bpsinc-native/src_third_party_chromite