defconfig: add otterx

Change-Id: I47efdb206ad9f5d7c98b28a6e298a0ed6e2b7d15
change power button to KEY_POWER

Change-Id: I511a113ce203a118fc18fbd1dff1cd6516130b71
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0-dev