crypto: exynos - fix Wvoid-pointer-to-enum-cast warning

'type' is an enum, thus cast of pointer on 64-bit compile test with W=1
causes:

exynos-rng.c:280:14: error: cast to smaller integer type 'enum exynos_prng_type' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/exynos-rng.c

···
 	if (!rng)
 		return -ENOMEM;
 
-	rng->type = (enum exynos_prng_type)of_device_get_match_data(&pdev->dev);
+	rng->type = (uintptr_t)of_device_get_match_data(&pdev->dev);
 
 	mutex_init(&rng->lock);