Allow adbd and shell to read /proc/config.gz

for CTS device info collection purposes.

Bug: 28656227
Test: m cts -j && cts-tradefed run cts -m Gesture --test
android.gesture.cts.GestureTest#testGetStrokes

Change-Id: I8caf3580fb05fb489dc5abb917c8cb78cb089fb7
2 files changed