input: touchpanel: Add FB notifications support to GT9xx

Add support for FB notifications to trigger suspend/resume
based on FB blank/unblank events.

This patch is propagated from msm-3.4 kernel
(commit: 542634c8cd6c728dc2c2c39598b02e0ab756966b
input: touchpanel: Add FB notifications support to GT9xx)

Change-Id: I61803e3a731e047d0641e3b1ccbae58b9bd1bd89
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>
Signed-off-by: Sudhakar Manapati <smanap@codeaurora.org>