Revert "msm8974: Update IPC router security configuration"

This reverts commit 8ceb7e8fbc35b4e218d7cb985f1b2b707825c262.

Change-Id: I9f13e037877363efedbb4772b06dc95c692e3864
Merge "Revert "msm8974: Update IPC router security configuration"" into kitkat