mmc: zynq: rename CONFIG_ZYNQ_SDHCI to CONFIG_MMC_SDHCI_ZYNQ

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

While we are here, add "depends on ARCH_ZYNQ || ARCH_ZYNQMP".

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/zynq_zc706_defconfig b/configs/zynq_zc706_defconfig
index 01b951e..2e43b1b 100644
--- a/configs/zynq_zc706_defconfig
+++ b/configs/zynq_zc706_defconfig
@@ -35,7 +35,7 @@
 CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
-CONFIG_ZYNQ_SDHCI=y
+CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_MMC_SDHCI=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y