Add I/O schedulers

Signed-off-by: Joseph <joseph.annareddy@outlook.com>

Update hwdep.c

Revert "Update hwdep.c"

This reverts commit e27f1e6433755cc424f57533a919dd06e314143c.

Revert "Add sound control"

This reverts commit 3218afc71b5f9445323f5be9543d901eede1e08e.
Merge branch 'kitkat' of github.com:javelinanddart/android_kernel_aosp_huashan into kitkat
Update .config and defconfig

Signed-off-by: Joseph <joseph.annareddy@outlook.com>