ARM: dts: msm: Add and enable wlaon-set-pwr-ctrl for sdxprairie

Add a new wlaon-set-pwr-ctrl entry to indicate if config register
WLAON_QFPROM_PWR_CTRL_REG during power on/off and enable it by
default for sdxprairie.

Change-Id: Ic44d2d42c6ab3a2523f9624e9b850e8826ce6ab8
CRs-Fixed: 2601850
Signed-off-by: Yue Ma <yuem@codeaurora.org>
Signed-off-by: Lin Bai <lbai@codeaurora.org>