ARM: dts: msm: Change QOS latency value for 8917

l2_GDHS state is disabled. So to allow L2-retention,
the QOS value needs to be changed to 651.

Change-Id: I2d2f4f842bbfe8db204d3aef15d97eb99ba0eaf7
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>