input: synaptics: Fix to secure touch clock unbalance

A wrongly interpreted return code from pm_runtime_get_sync caused
clocks to be unprepared without being previously prepared
Also fix a merge typo for the on the suspend operation.

Change-Id: I03cd465976d8b5d7b5519c2122692d0bdba8ada8
Acked-by: Christian Bolis <cbolis@qti.qualcomm.com>
Signed-off-by: Keith Fallows <keithf@codeaurora.org>