ARM: dt: msm: Turn off eMMC LDO17 during sleep for 8610

eMMC VCC power can be turned off during sleep, turn off LDO17 instead of
setting it in low power mode.

Change-Id: I905a7203ad4a59e48979c2c9fb903a81c578f3d3
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Krishna Konda <kkonda@codeaurora.org>