staging:wlags49_h2:change include path for uaccess.h

This patch fixes the following issue detected by checkpatch.pl.
WARNING: Use #include <linux/uaccess.h> instead of <asm/uaccess.h>

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>