arm: Drop linker script when building without PIE

The current section headers generated by bionic are incompatible
with this (interp is in, ctors were dropped, and other tiny changes
related to Elf32_Dyn). But... we don't actually need this to
disable PIE, so drop it entirely instead of writing a new one.

Change-Id: I3b350a9f6251e60bf52114343d190f3d6d83b216
repopick: fix broken pipe error from "repo list"

  * the subprocess running "repo list" was not closed cleanly
    if the branch was found

Change-Id: Ie659966f3a670b25ab076a8dc723c4235760d04e
build: allow dopush to work properly with network adb

Change-Id: I9efe60814d66dc8eb17544e6c2b94473dc903133
add cortex-a5 cpu variant

Change-Id: I369e499d537888eb0f07d900cb50d1424632820e