sm8550-6.18: No need to use sdhci-msm-downstream driver

Signed-off-by: Alex Ling <ling_kasim@hotmail.com>

Author: kasimling

config/kernel/linux-sm8550-edge.config

@@ -780,7 +780,6 @@ CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ACPI=y
 CONFIG_MMC_SDHCI_PLTFM=y
 CONFIG_MMC_SDHCI_MSM=y
-CONFIG_MMC_SDHCI_MSM_DOWNSTREAM=y
 CONFIG_MMC_SPI=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_HSQ=y