Staging: gdm72xx: Fix incorrect type in assignment in gdm_wimax.c

This patch fixes following sparse warnings:
drivers/staging/gdm72xx/gdm_wimax.c:543:37: warning: incorrect type in argument 1 (different address spaces)
drivers/staging/gdm72xx/gdm_wimax.c:543:37:    expected void [noderef] <asn:1>*to
drivers/staging/gdm72xx/gdm_wimax.c:543:37:    got void *buf
drivers/staging/gdm72xx/gdm_wimax.c:566:41: warning: incorrect type in argument 2 (different address spaces)
drivers/staging/gdm72xx/gdm_wimax.c:566:41:    expected void const [noderef] <asn:1>*from
drivers/staging/gdm72xx/gdm_wimax.c:566:41:    got void *buf
Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gdm72xx/gdm_wimax.c

@@ -539,7 +539,7 @@ static int gdm_wimax_ioctl_get_data(struct data_s *dst, struct data_s *src)
 	if (src->size) {
 		if (!dst->buf)
 			return -EINVAL;
-		if (copy_to_user(dst->buf, src->buf, size))
+		if (copy_to_user((void __user *)dst->buf, src->buf, size))
 			return -EFAULT;
 	}
 	return 0;
@@ -562,7 +562,7 @@ static int gdm_wimax_ioctl_set_data(struct data_s *dst, struct data_s *src)
 			return -ENOMEM;
 	}
 
-	if (copy_from_user(dst->buf, src->buf, src->size)) {
+	if (copy_from_user(dst->buf, (void __user *)src->buf, src->size)) {
 		kdelete(&dst->buf);
 		return -EFAULT;
 	}