watchdog: it87_wdt: add blank line after variable declaration

This patch fixes the following checkpatch.pl warning:

WARNING: Missing a blank line after declarations
Signed-off-by: Werner Fischer <devlists@wefi.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20231213094525.11849-1-devlists@wefi.netSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/it87_wdt.c

@@ -146,6 +146,7 @@ static inline void superio_outb(int val, int reg)
 static inline int superio_inw(int reg)
 {
 	int val;
+
 	outb(reg++, REG);
 	val = inb(VAL) << 8;
 	outb(reg, REG);