Fix build on aarch64, after MDEV-21534

vaintroub · vaintroub · commit a99c93a7fafd · 2020-03-02T14:28:16.000+01:00
MY_RELAX_CPU on this arch needs int32, defined in my_global.h
diff --git a/include/my_cpu.h b/include/my_cpu.h
@@ -54,6 +54,7 @@
 #elif defined HAVE_PAUSE_INSTRUCTION
 #elif defined(_ARCH_PWR8)
 #else
+# include "my_global.h"
 # include "my_atomic.h"
 #endif
 
