soc/intel/braswell: Fix most of the issues detected by checkpatch

Fix the following errors and warnings detected by checkpatch.pl:

ERROR: that open brace { should be on the previous line
ERROR: return is not a function, parentheses are not required
WARNING: braces {} are not necessary for any arm of this statement
WARNING: line over 80 characters
WARNING: braces {} are not necessary for single statement blocks
WARNING: Avoid unnecessary line continuations
WARNING: break is not useful after a goto or return
WARNING: else is not generally useful after a break or return

False positives are generated by checkpatch for the following test:
ERROR: Macros with complex values should be enclosed in parentheses

TEST=Build for cyan

Change-Id: I19048895145b138a63100b29f829ff446ff71b58
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18871
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins)

src/soc/intel/braswell/acpi.c

@@ -525,12 +525,10 @@ void southcluster_inject_dsdt(device_t device)
 	if (gnvs) {
 		acpi_create_gnvs(gnvs);
 		/* Fill in the Wifi Region id */
-		if (IS_ENABLED(CONFIG_HAVE_REGULATORY_DOMAIN)) {
+		if (IS_ENABLED(CONFIG_HAVE_REGULATORY_DOMAIN))
 			gnvs->cid1 = wifi_regulatory_domain();
-		} else {
-
+		else
 			gnvs->cid1 = WRDD_DEFAULT_REGULATORY_DOMAIN;
-		}
 		acpi_save_gnvs((unsigned long)gnvs);
 		/* And tell SMI about it */
 		smm_setup_structures(gnvs, NULL, NULL);