tinysys freertos Android.mk: remove prefix plus sign

which will cause compiling error with the nougat base android

Change-Id: I481304844fc22d9cab0235ab7a1b8eed63182e49
Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>
2 files changed
tree: 7cc5885a6b142f998502cafee6ef63acd3d98570
  1. libs/
  2. proprietary/
  3. .gitreview