Android: fix examples/gl_basic for android

Android.mk needed few path changes and -c99 flag to allow
examples/gl_basic to be compiled for android.

Signed-off-by: Juha-Pekka Heikkila <juha-pekka.heikkila@linux.intel.com>
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>