[compiler-rt] disable asan bcmp tests on android.
Android does not have bcmp.
sanitizer-x86_64-linux-android: run instrumented asan tests [arm/aosp_marlin-userdebug/PI] -  stdio
// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
// REQUIRES: compiler-rt-optimized
+// UNSUPPORTED: android
#include <string.h>
int main(int argc, char **argv) {
