USB: serial: kl5kusb105: clean up struct definition

Drop redundant packed attribute from the port-settings struct which is
already 1-byte aligned. Also replace __u8 with u8 for the field types as
this is not a structure we share with user space.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

drivers/usb/serial/kl5kusb105.c

@@ -103,12 +103,12 @@ static struct usb_serial_driver * const serial_drivers[] = {
 };
 
 struct klsi_105_port_settings {
-	__u8	pktlen;		/* always 5, it seems */
-	__u8	baudrate;
-	__u8	databits;
-	__u8	unknown1;
-	__u8	unknown2;
-} __attribute__ ((packed));
+	u8	pktlen;		/* always 5, it seems */
+	u8	baudrate;
+	u8	databits;
+	u8	unknown1;
+	u8	unknown2;
+};
 
 struct klsi_105_private {
 	struct klsi_105_port_settings	cfg;