d2: don't build without proprietary blobs

Change-Id: Ice867aa7d8c9a42135dfa8ce7aea457337da4ea5
Merge "d2: don't build without proprietary blobs" into cm-10.2
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_device_samsung_d2-common into cm-10.2