Input: psmouse - fix incorrect validate_byte check in OLPC protocol

The validate_byte check logic was backwards; it should return true for
an *invalid* packet. Thanks to Jeremy Katz for spotting this one.

Signed-off-by: Andres Salomon <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/mouse/hgpk.c

···
  */
 static int hgpk_validate_byte(unsigned char *packet)
 {
-	return (packet[0] & 0x0C) == 0x08;
+	return (packet[0] & 0x0C) != 0x08;
 }
 
 static void hgpk_process_packet(struct psmouse *psmouse)