mmc: sdhci: remove unneeded (void *) casts in sdhci_(pltfm_)priv()

The type of host->private is (unsigned long *).  No cast is needed
to return an opaque pointer.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NAdrian Hunter <adrian.hunter@intel.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pltfm.h

@@ -106,7 +106,7 @@ extern unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host);
 
 static inline void *sdhci_pltfm_priv(struct sdhci_pltfm_host *host)
 {
-	return (void *)host->private;
+	return host->private;
 }
 
 extern const struct dev_pm_ops sdhci_pltfm_pmops;

drivers/mmc/host/sdhci.h

@@ -656,7 +656,7 @@ extern void sdhci_free_host(struct sdhci_host *host);
 
 static inline void *sdhci_priv(struct sdhci_host *host)
 {
-	return (void *)host->private;
+	return host->private;
 }
 
 extern void sdhci_card_detect(struct sdhci_host *host);