hwrng: exynos - fixup IO accesors

The __raw IO functions are not endian safe, so use the readl_relaxed
and writel_relaxed versions of these.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/char/hw_random/exynos-rng.c

@@ -45,12 +45,12 @@ struct exynos_rng {
 
 static u32 exynos_rng_readl(struct exynos_rng *rng, u32 offset)
 {
-	return	__raw_readl(rng->mem + offset);
+	return	readl_relaxed(rng->mem + offset);
 }
 
 static void exynos_rng_writel(struct exynos_rng *rng, u32 val, u32 offset)
 {
-	__raw_writel(val, rng->mem + offset);
+	writel_relaxed(val, rng->mem + offset);
 }
 
 static int exynos_rng_configure(struct exynos_rng *exynos_rng)