ARM: dts: msm: change accelerometer position property for QRD8612

QRD8612 change accelerometer mounting position form top to bottom,
sensor position property must change to adapt this.

Change-Id: I00365cde962412b26118bd990da9489afe0b0ed3
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>
Merge "ARM: dts: msm: change accelerometer position property for QRD8612"