full_base: Don't compile OpenWnn.
           This package is/was meant to be optional.

Change-Id: I41f9b7c6dab50fbaf7ba4e90c22f731e7e8cbce2
Merge "full_base: Don't compile OpenWnn.            This package is/was meant to be optional." into android-4.4
Merge remote-tracking branch 'omni/android-4.4' into omni-4.4

Conflicts:
	target/product/full_base.mk