src/include: Remove space after &

Fix the following error detected by checkpatch.pl:

ERROR: space prohibited after that '&' (ctx:ExW)

TEST=Build and run on Galileo Gen2

Change-Id: Ied8b4c00fc57a35ed4d649264a5ff1b8dcc6a1cd
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18648
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/include/bootstate.h

@@ -197,7 +197,7 @@ struct boot_state_init_entry {
 	};								\
 	static struct boot_state_init_entry *				\
 		bsie_ ## func_ ##_## state_ ##_## when_ BOOT_STATE_INIT_ATTR = \
-		& func_ ##_## state_ ##_## when_;
+		&func_ ##_## state_ ##_## when_;
 
 /* Hook per arch when coreboot is exiting to payload or ACPI OS resume. It's
  * the very last thing done before the transition. */