msm8660: Update EMMC boot property name

Change-Id: Ib9493c07a69e57ff753ab9f3bdd4a985d817ec0a
msm8660-common: update property for mdp composition

Change-Id: I20d981ada8dad512b6410e0e6f639a407ba74fcf
Merge remote-tracking branch 'TeamChopsticks/cm-10.1' into HEAD