android: set the HAVE_VISIBILITY define

... in order to limit the exported symbols only to the required ones.
Both compilers used with Android (GCC and LLVM) support this, so set it
unconditionally.

Cc: Chih-Wei Huang <cwhuang@linux.org.tw>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
1 file changed