src: Add required space after "switch"

Change-Id: I85cf93e30606bc7838852bd300a369e79370629a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29623
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/mainboard/google/link/mainboard.c

@@ -58,7 +58,7 @@ static int int15_handler(void)
 	printk(BIOS_DEBUG, "%s: INT15 function %04x!\n",
 			__func__, X86_AX);
 
-	switch(X86_AX) {
+	switch (X86_AX) {
 	case 0x5f34:
 		/*
 		 * Set Panel Fitting Hook: