added zen scheduler and updated defconfig

Change-Id: If0018dbb8941407842057058baa43b11cc5b5d1e
added sio and fiops to fix error with zen

Change-Id: I42fc40bd77bdfbec67c028d6195ffbe326c7c222
kernel:sched: LOAD_FREQ (4*HZ+61) avoids loadavg More (faux123)
Performance Tweak

* This little tweak should improve performance slightly.
updated defconfig with linked cpu and gitignore