Treat denver like cortex-a15.

See also build/core/combo/arch/arm/armv7-a-neon.mk.

Change-Id: Ie18e1f133f56a9f7da80e304052c92edad933a31
Merge "Treat denver like cortex-a15."
Disable DEXPREOPT until we have multilib support

Bug: 14694978
Change-Id: I31d0f1c78a668435646c99e659cec46cd2f3ddf7
Merge "Disable DEXPREOPT until we have multilib support"
auto-merger: merge in from aosp/master