[AArch64][compiler-rt] Fix HWCAP_CPUID not defined in some cases.

Define HWCAP_CPUID to fix commit e43924a.

Author: ilinpv

compiler-rt/lib/builtins/cpu_model.c

@@ -921,6 +921,9 @@ _Bool __aarch64_have_lse_atomics
 #define AT_HWCAP 16
 #endif
 
+#ifndef HWCAP_CPUID
+#define HWCAP_CPUID (1 << 11)
+#endif
 #ifndef HWCAP_FP
 #define HWCAP_FP (1 << 0)
 #endif