ARM: dts: msm: Enable QoS programming for masters on msm8996

Enable the QoS programming of master ports on msm8996. The QoS
registers need to be programmed to setup priorities for bus traffic
from these master ports.

Change-Id: I8dd3b804978a264691b4ecb0c8b422487cb2a495
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>