src/cpu: Add required space before opening parenthesis '('

Change-Id: I7fb9bfcaeec0b9dfd0695d2b2d398fd01091f6bc
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/16286
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Omar Pakker

src/cpu/intel/hyperthreading/intel_sibling.c

@@ -85,7 +85,7 @@ void intel_sibling_init(struct device *cpu)
 	}
 
 	/* I am the primary CPU start up my siblings */
-	for(i = 1; i < siblings; i++) {
+	for (i = 1; i < siblings; i++) {
 		struct device_path cpu_path;
 		struct device *new;
 		/* Build the CPU device path */