ARM: dts: msm: reorganize Haptics DT for 8952

8952 CDP, MTP and QRD use the same Haptics node. Reorganize
the Haptics DT by moving the same functionality to PMI8950's
DT file instead.

Change-Id: Ie3ffa0cbd665bdfd372591690edf05c625ec2d98
Signed-off-by: Himanshu Aggarwal <haggarwa@codeaurora.org>