mmc: sdhci-of-arasan: Fixed kernel-doc format warning

Commit 36c6aada ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")
introduces syscon map sdhci_arasan_update_support64b(). Unfortunately,
kernel-doc format script tool has not been run before and causing warning
on the documentation style.

Below is the output when running the kernel-doc script tool:
drivers/mmc/host/sdhci-of-arasan.c:1388: warning: contents before sections

Let's fix this by using standard conventions kernel-doc format.

Fixes: 36c6aada ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20210111155001.12307-2-muhammad.husaini.zulkifli@intel.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-of-arasan.c

@@ -1380,17 +1380,16 @@ static void sdhci_arasan_unregister_sdclk(struct device *dev)
 
 /**
  * sdhci_arasan_update_support64b - Set SUPPORT_64B (64-bit System Bus Support)
+ * @host:		The sdhci_host
+ * @value:		The value to write
  *
  * This should be set based on the System Address Bus.
  * 0: the Core supports only 32-bit System Address Bus.
  * 1: the Core supports 64-bit System Address Bus.
  *
- * NOTES:
- * - For Keem Bay, it is required to clear this bit. Its default value is 1'b1.
- *   Keem Bay does not support 64-bit access.
- *
- * @host:		The sdhci_host
- * @value:		The value to write
+ * NOTE:
+ * For Keem Bay, it is required to clear this bit. Its default value is 1'b1.
+ * Keem Bay does not support 64-bit access.
  */
 static void sdhci_arasan_update_support64b(struct sdhci_host *host, u32 value)
 {