mmc: use proper name for the R-Car SoC

It is 'R-Car', not 'RCar'. No code or binding changes, only descriptive text.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/renesas_sdhi_core.c

@@ -130,7 +130,7 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host,
 	unsigned int freq, diff, best_freq = 0, diff_min = ~0;
 	int i, ret;
 
-	/* tested only on RCar Gen2+ currently; may work for others */
+	/* tested only on R-Car Gen2+ currently; may work for others */
 	if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
 		return clk_get_rate(priv->clk);
 

include/linux/mfd/tmio.h

@@ -66,7 +66,7 @@
  */
 #define TMIO_MMC_SDIO_IRQ		(1 << 2)
 
-/* Some features are only available or tested on RCar Gen2 or later */
+/* Some features are only available or tested on R-Car Gen2 or later */
 #define TMIO_MMC_MIN_RCAR2		(1 << 3)
 
 /*