Revert "Revert "Set mmap_rnd_bits to maximum value.""

This reverts commit c8f026fc9c80ef2ae3aa0a41f55f7670894bb675.

The above revert was meant only for AOSP, not internal master, since the
kernel prebuilts  were not yet available there.  Revert the revert
internally so that internal builds, which have the appropriate kernel
prebuilts, operate properly.

Bug: 27681085
Change-Id: Ide81d43cd22e37979c8266342677db896da1c792
1 file changed