display: Relocate default_action()

display: Relocate default_action()

For relocating default_action(), there are some changes.

1. Add device_ops_status getter/setter temporarily.
2. Add lcd on time update and calculation functions.
3. Remove state action functions from the display-plugin.
   -> Since default_action() has relocated, these functions no longer need to exist.

New functions in the display
- void display_set_display_ops_status(enum device_ops_status dev_ops_status);
- int display_get_display_ops_status(enum device_ops_status *dev_ops_status);
    -> device_ops_status is set during the display init, probe, exit...

New functions in the display-panel
- void display_panel_update_lcd_on_timeval(void);
- int display_panel_calculate_diff_time_between_lcd_on_direct_and_state_action(int *diff_time);
    -> These functions update lcd_on time and caculate the time difference
       between lcd_on_direct and do_state_action.

New function in the display-state-transition
- int display_state_transition_do_state_action(int timeout);
    -> This function is usually called after the display state changed.
       It handles the rest of the work for changed display state.

Change-Id: If6ccd5f5cbcae21ed87db473596bdc3c71ddb86f
Signed-off-by: Yunhee Seo <yuni.seo@samsung.com>