UPSTREAM: src/include: Add space after comma

Fix the following error detected by checkpatch.pl:

ERROR: space required after that ',' (ctx:VxV)

TEST=Build and run on Galileo Gen2

Change-Id: I4025b28b4479350718da5403a2eb6c3dc9804fe9
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: ae3fd34e00
Original-Change-Id: I297bfc3d03dc95b471d3bb4b13803e81963841b5
Original-Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Original-Reviewed-on: https://review.coreboot.org/18647
Original-Tested-by: build bot (Jenkins)
Original-Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://chromium-review.googlesource.com/452877

src/include/stdlib.h

@@ -3,8 +3,8 @@
 
 #include <stddef.h>
 
-#define min(a,b) MIN((a),(b))
-#define max(a,b) MAX((a),(b))
+#define min(a, b) MIN((a), (b))
+#define max(a, b) MAX((a), (b))
 
 void *memalign(size_t boundary, size_t size);
 void *malloc(size_t size);