input: synaptics_i2c_rmi4: amend error handling in wake and sleep

When device is put to suspend or resume, the correct behavior is to
restore the previous state so that correct suspend and resume behavior
is ensured in subsequent runs.

This patch is propagated from msm-3.10 kernel
(commit: ec69cce7ca307120838f4b1ca0cd28f60fc76f35
input: synaptics_i2c_rmi4: amend error handling in wake and sleep)

CRs-Fixed: 591072
Change-Id: I2ff52a18df948b6d8eafaf049d50829ea7968323
Signed-off-by: Chun Zhang <chunz@codeaurora.org>