Revert "gdb: Disable simulator target and tui"

This reverts commit 06b472116e2652456ff85aa28ec1bf29c26fd3d4.

Conflicts:
	arm-androideabi

Change-Id: Ifbfe347d3a9fea10cfe628aff5a5f8e9ec1267f6
Signed-off-by: Paul Beeler <sparksco@gmail.com>