qseecom: Add qseecom driver snapshot

This is a snapshot of the qseecom driver as of msm-4.4
commit <726279510b02ba9> (msm: pcie: add sysfs entry
for PCIe enumeration).

Change-Id: Ied091cd52dec19081ff03b84ba82d1c8faeba4d3
Signed-off-by: AnilKumar Chimata <anilc@codeaurora.org>