HID: i2c-hid: fix checkpatch.pl warning

We should not initialize to 0 static declarations.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/i2c-hid/i2c-hid.c

@@ -46,7 +46,7 @@
 #define I2C_HID_PWR_SLEEP	0x01
 
 /* debug option */
-static bool debug = false;
+static bool debug;
 module_param(debug, bool, 0444);
 MODULE_PARM_DESC(debug, "print a lot of debug information");