set readahead back to default AGAIN (stop messing with this!)

Change-Id: I65b1ce45379fb70aad9708a18521c5e2184281a4
Change default max cpu freq from 1512000 to 1566000 to match defaults in the init script

Change-Id: Ia6e3767bb792708012e37acea750dc7b70caa835
Enable ONDEMAND 2-phase freq

Change-Id: I7d603e593824d8692d002388e8995d204a4d3bae
Disabled ZRAM

Change-Id: I6a2cd97b69eb0faf422a0c5a86e9220d64ca7bf5
Disabled KSM

Change-Id: Ic215d81d829ff97cd9521e157fc0f6d7afb618a5