printk: Add sys kernel interface to configure linux printk logging

- now logging can be switched on and off via /sys/kernel/printk_mode interface
- default is 1 (on)
- Enabled time stamp information in logs again
logger: Add sys fs kernel interface to configure Android logger

- now logging can be switched on and off via /sys/kernel/logger_mode/logger_mode interface
- default is 1 (on)
mdnie: black crush fix

credits to AndreiLux
mm: Dynamic management of dirty page writebacks thx Christopher83
Early Suspend Delay v1.0a - SysFS interface

 * /sys/kernel/early_suspend/early_suspend_delay (rw)
 *
 *   time to pause in miliseconds (0 - 700ms)
 *
 * /sys/kernel/early_suspend/version (ro)
 *
 *   display early suspend delay version information

 credits to Yank555.lu

 modified by andip71 to set default delay of 100ms instead of disabled