soc: qcom: Add snapshot of scm-xpu driver from msm-3.10

This snapshot is taken as of msm-3.10 commit:
  e3a3f66e47 ("Merge "soc: qcom: pil-q6v5-mss: Do not free memory
  allocated to modem pil")

When compiled, the scm-xpu driver makes a single scm call at boot
to enable treatment of XPU errors as fatal.

Change-Id: Id33c2b73f4ed7ba8a07c5affebbe66eb5eba7951
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>