Add "nodpi" to DpiTest Android.mk
Add "nodpi" to DpiTest Android.mk

Part of the drawables for DpiTest is a nodpi directory, but the
LOCAL_AAPT_FLAGS didn't specify it.

Bug: 3165492
Change-Id: I989068d76f922db6048e6db7cc6822ab3234d36e

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base