mmc: rockchip: rename CONFIG_ROCKCHIP_SDHCI to CONFIG_MMC_SDHCI_ROCKCHIP

Make the naming scheme consistent; all SDHCI-base drivers prefixed
with CONFIG_MMC_SDHCI_.

While we are here, add "depends on ARCH_ROCKCHIP".

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 1d15cdd..6f51354 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -165,13 +165,6 @@
 	help
 	  Support for Microchip PIC32 SDHCI controller.
 
-config ROCKCHIP_SDHCI
-	bool "Arasan SDHCI controller for Rockchip support"
-	depends on DM_MMC && BLK && DM_MMC_OPS
-	depends on MMC_SDHCI
-	help
-	  Support for Arasan SDHCI host controller on Rockchip ARM SoCs platform
-
 config MMC_UNIPHIER
 	bool "UniPhier SD/MMC Host Controller support"
 	depends on ARCH_UNIPHIER
@@ -262,6 +255,14 @@
 
 	  If unsure, say N.
 
+config MMC_SDHCI_ROCKCHIP
+	bool "Arasan SDHCI controller for Rockchip support"
+	depends on ARCH_ROCKCHIP
+	depends on DM_MMC && BLK && DM_MMC_OPS
+	depends on MMC_SDHCI
+	help
+	  Support for Arasan SDHCI host controller on Rockchip ARM SoCs platform
+
 config MMC_SDHCI_S5P
 	bool "SDHCI support on Samsung S5P SoC"
 	depends on MMC_SDHCI