commonlib: Remove space after *

Fix the following error detected by checkpatch.pl:

ERROR: "foo * bar" should be "foo *bar"

TEST=Build and run on Galileo Gen2

Change-Id: If68dfa2b49c61d574f35192f94d1a6642069fa7f
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18752
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)

src/commonlib/region.c

@@ -245,7 +245,7 @@ static void *mdev_mmap(const struct region_device *rd, size_t offset,
 	return &mdev->base[offset];
 }
 
-static int mdev_munmap(const struct region_device * rd __unused,
+static int mdev_munmap(const struct region_device *rd __unused,
 			void *mapping __unused)
 {
 	return 0;