ARM: dts: msm: mark SPMI debug slave devices as can-sleep for SDM845

Specify the qcom,can-sleep property for each of the slave devices
on the SPMI debug bus since the debug bus cannot operate in
atomic context.

Change-Id: I89c059725f9dad82a9627e9c2994b211fa7099d2
Signed-off-by: David Collins <collinsd@codeaurora.org>