rockchip: Disable CONFIG_SDHCI

This option is not actually needed for rockchip boards. Drop it, since it
will not support driver-model MMC operation support.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/rk3036_common.h b/include/configs/rk3036_common.h
index 1bdcf9d..ae4b101 100644
--- a/include/configs/rk3036_common.h
+++ b/include/configs/rk3036_common.h
@@ -45,7 +45,6 @@
 /* MMC/SD IP block */
 #define CONFIG_MMC
 #define CONFIG_GENERIC_MMC
-#define CONFIG_SDHCI
 #define CONFIG_DWMMC
 #define CONFIG_BOUNCE_BUFFER
 
diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
index 9d50d83..8adc26f 100644
--- a/include/configs/rk3288_common.h
+++ b/include/configs/rk3288_common.h
@@ -51,7 +51,6 @@
 /* MMC/SD IP block */
 #define CONFIG_MMC
 #define CONFIG_GENERIC_MMC
-#define CONFIG_SDHCI
 #define CONFIG_DWMMC
 #define CONFIG_BOUNCE_BUFFER