avoid folly::hardware_concurrency optimization on android

Differential Revision: D83869948

fbshipit-source-id: d002c16f50fa27099df7e7f1a27dd6d66bb2405c

Author: yfeldblum

third-party/folly/src/folly/system/HardwareConcurrency.cpp

@@ -66,7 +66,7 @@ cpu_set_state::~cpu_set_state() {
 #endif
 
 unsigned int hardware_concurrency() noexcept {
-#if defined(__linux__)
+#if defined(__linux__) && !defined(__ANDROID__)
   cpu_set_t stackset;
   return to_narrow(cpu_set_state::ask(&stackset).cpu_count());
 #endif