mmc: sdhci-sprd: Constify struct sdhci_ops

The local struct sdhci_ops can be made const for code safety.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Adrian Hunter <[e-mail]>
Reviewed-by: Baolin Wang <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ulf Hansson <[e-mail]>

drivers/mmc/host/sdhci-sprd.c

···
 	}
 }
 
-static struct sdhci_ops sdhci_sprd_ops = {
+static const struct sdhci_ops sdhci_sprd_ops = {
 	.read_l = sdhci_sprd_readl,
 	.write_l = sdhci_sprd_writel,
 	.write_w = sdhci_sprd_writew,