soc/intel/broadwell: Fix {}, () and conditional issues

Fix the following errors and warnings detected by checkpatch:

ERROR: open brace '{' following struct go on the same line
ERROR: return is not a function, parentheses are not required
ERROR: do not use assignment in if condition
ERROR: trailing statements should be on next line
WARNING: else is not generally useful after a break or return
WARNING: braces {} are not necessary for single statement blocks
WARNING: braces {} are not necessary for any arm of this statement

TEST=None

Change-Id: I9414341b0c778c252db33f0ef4847b9530681d96
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18884
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
diff --git a/src/soc/intel/broadwell/systemagent.c b/src/soc/intel/broadwell/systemagent.c
index f0c1ef2..f46f5ea 100644
--- a/src/soc/intel/broadwell/systemagent.c
+++ b/src/soc/intel/broadwell/systemagent.c
@@ -256,9 +256,8 @@
 static void mc_read_map_entries(device_t dev, uint64_t *values)
 {
 	int i;
-	for (i = 0; i < NUM_MAP_ENTRIES; i++) {
+	for (i = 0; i < NUM_MAP_ENTRIES; i++)
 		read_map_entry(dev, &memory_map[i], &values[i]);
-	}
 }
 
 static void mc_report_map_entries(device_t dev, uint64_t *values)