bacon: Use the correct variable to determine boot animation

Use SIGN_BUILD instead of SIGNED_BUILD to determine if the fingerprint
should be fixed and which boot animation should be used.

Change-Id: I2520e69863c0b4c6e2db7250d58efb9fd58e8398
Merge branch 'cm-11.0' into kk_mkt

Conflicts:
	mokee.mk

Change-Id: Iff804a5175ecb2b24da995fb61e53c6a11bdfe9c