gpio_input: power key released event min diff counting for press

Power key press duplication on long power press fix.

Change-Id: Idb21c78fb7ae011569a73f534299c16bc83082e5
block: Update BFQ to v6r1
Linux 3.0.81

Signed-off-by: Sultanxda <sultanxda@gmail.com>

(Corrected)Conflicts:
	mm/mmu_notifier.c
Merge remote-tracking branch 'lomarb/exp' into wild-exp
Linux 3.0.81

Signed-off-by: Sultanxda <sultanxda@gmail.com>

Conflicts:
	mm/mmu_notifier.c