arch/x86: Fix issues with braces detected by checkpatch

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

ERROR: open brace '{' following function declarations go on the next line
ERROR: that open brace { should be on the previous line
ERROR: else should follow close brace '}'
WARNING: braces {} are not necessary for any arm of this statement
WARNING: braces {} are not necessary for single statement blocks

TEST=Build and run on Galileo Gen2

Change-Id: I13d1967757e106c8300a15baed25d920c52a1a95
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18861
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/arch/x86/bootblock_normal.c

@@ -16,7 +16,8 @@
 #include <pc80/mc146818rtc.h>
 #include <halt.h>
 
-static const char *get_fallback(const char *stagelist) {
+static const char *get_fallback(const char *stagelist)
+{
 	while (*stagelist) stagelist++;
 	return ++stagelist;
 }