zeus: Increase ION_MM size

 * Needed for Netflix, or else it runs out of memory.
Import pmic_keypad changes from 6.2.B.0.200

Modified from fuji for zeus
Removed all fuji references making driver more generic

Change-Id: I14493f181ecfb030cb78183633ffb814095ab2b9
zeus/phoenix: Add support for pmic keypad

Change-Id: I2a3f9629d3a91db1d5b61a9f7592f20f51b35927