FP5U-52 [2] Disable ramdump

* Comment: Disable ramdump
* Root Cause: Requirement
* Solution: Didable ramdump
* Test Steps:
  trigger a crash and check status
    adb shell echo c > proc/sysrq-trigger
* Test Result: Pass

Change-Id: I7e801a6a02448673e41ffdabbc7892ff570bb22c