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: I297bfc3d03dc95b471d3bb4b13803e81963841b5
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18647
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/include/device/resource.h b/src/include/device/resource.h
index 7160eec7..1a8c451 100644
--- a/src/include/device/resource.h
+++ b/src/include/device/resource.h
@@ -46,10 +46,10 @@
 };
 
 /* Macros to generate index values for resources */
-#define IOINDEX_SUBTRACTIVE(IDX,LINK) (0x10000000 + ((IDX) << 8) + LINK)
+#define IOINDEX_SUBTRACTIVE(IDX, LINK) (0x10000000 + ((IDX) << 8) + LINK)
 #define IOINDEX_SUBTRACTIVE_LINK(IDX) (IDX & 0xff)
 
-#define IOINDEX(IDX,LINK) (((LINK) << 16) + IDX)
+#define IOINDEX(IDX, LINK) (((LINK) << 16) + IDX)
 #define IOINDEX_LINK(IDX) (( IDX & 0xf0000) >> 16)
 #define IOINDEX_IDX(IDX) (IDX & 0xffff)