display: Add display attribute for controlling DPMS

display: Add display attribute for controlling DPMS

New attribute:
 - id: DEVICED_DISPLAY_ATTR_INT_DPMS_STATE
 - type: SYSCOMMON_RESMAN_DATA_TYPE_INT
 - setter: O
 - getter: O
 It sets/gets DPMS value type of enum deviced_dpms_state.

New attribute:
 - id: DEVICED_DISPLAY_ATTR_TUPLE2_SET_DISPLAY_DIRECT
 - type: SYSCOMMON_RESMAN_DATA_TYPE_UINT64_UINT64
 - setter: O
 - getter: X
 It bypasses display state transition routine. Instead it sets DPMS
 directly. It requires two parameter, enum deviced_dpms_state and
 enum deviced_event.

Change-Id: If8ab662ccf011458607acfa24aca97298eddcfc6
Signed-off-by: Youngjae Cho <y0.cho@samsung.com>