Revert "ARM: sched: clear SD_SHARE_POWERLINE"

This reverts commit adc57618c50a41bd6106c64f8614ebe7aba62bf5.
DRIVERS: I2C: fix compile with Linaro 4.8.3 and -Ofast options
initialize variables
DRIVERS: SLIMBUS: fix compile with Linaro 4.8.3 and -Ofast options
> initialize variables
KERNEL: fix compile with Linaro 4.8.3 and -Ofast options
> initialize variables