Revert "More GCC 4.8 fixes"

This reverts commit f4fcb223fe7f08826e79bdcad7279ce135e69f05.
GCC 4.7 fixes
Add SIO and FIOPS i/o schedulers
USB Fast Charge for Nexus 5

Increases input current limit to 900mA when charging via USB.
This patch does not force AC mode because this device is capable
of a charging at a much higher current limit than some USB ports
are able to deliver.