Revert "armani: use prebuilt"

This reverts commit f3843c906f0f4b77f23965d78ff9f8b7e35ad2e2.
yo
Revert "Revert "Build kernel but use prebuilt (thanks syhost)""

This reverts commit b1fd61ae546b9feb5c0ae741f791ef51c5b70ebc.

Conflicts:

	device.mk
	overlay/frameworks/base/core/res/res/values/config.xml
fix