Platform: OLPC: Remove an unused include

Also, the header is x86 specific, while there are non-x86 OLPC machines.

Signed-off-by: Lubomir Rintel <[e-mail]>
Acked-by: Pavel Machek <[e-mail]>
Signed-off-by: Andy Shevchenko <[e-mail]>

drivers/platform/olpc/olpc-ec.c

···
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/olpc-ec.h>
-#include <asm/olpc.h>
 
 struct ec_cmd_desc {
 	u8 cmd;