soc/intel/apollolake: Fix spacing around operators and commas

Fix the following errors detected by checkpatch.pl:

ERROR: spaces required around that '==' (ctx:VxO)
ERROR: space required before that '-' (ctx:OxV)
ERROR: spaces required around that '=' (ctx:VxW)
ERROR: spaces required around that '=' (ctx:WxV)
ERROR: spaces required around that '=' (ctx:VxV)
ERROR: need consistent spacing around '+' (ctx:VxW)
ERROR: space prohibited before that '++' (ctx:WxB)
ERROR: space prohibited before that ',' (ctx:WxW)
ERROR: space required after that ',' (ctx:VxV)

TEST=Build for reef

Change-Id: I37265a69fcb14fbf7c182ef29d823f70a5748ad8
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18720
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/soc/intel/apollolake/bootblock/bootblock.c

@@ -89,7 +89,7 @@ static void cache_bios_region(void)
 
 	mtrr = get_free_var_mtrr();
 
-	if (mtrr==-1)
+	if (mtrr == -1)
 		return;
 
 	/* Only the IFD BIOS region is memory mapped (at top of 4G) */