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>

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
 

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