chore: add parens

Signed-off-by: krishna2803 <[email protected]>

Author: krishna2803

libc/include/llvm-libc-types/cpu_set_t.h

@@ -10,7 +10,7 @@
 #define LLVM_LIBC_TYPES_CPU_SET_T_H
 
 #define __CPU_SETSIZE 1024
-#define __NCPUBITS 8 * sizeof(unsigned long)
+#define __NCPUBITS (8 * sizeof(unsigned long))
 
 typedef struct {
   // If a processor with more than 1024 CPUs is to be supported in future,