msm: Add snapshot of early random number driver

This is a snapshot of minidump driver as of msm-4.14 commit
<1cef27dd1d8f>. (Merge "net: cnss_prealloc: add debugfs entry to check
the memory status").

Change-Id: I0576fae97a45b2610fa103d63e0a52fb4068d336
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>