ARM64: zynqmp: Do not enable DM_MMC by default

The patch:
"dm: mmc: zynq: Convert zynq to use driver model for MMC"
(sha1: 329a449f2c289b4de8f892fca1d9379ce5fd81b8)
added dependency on enabling some MMC options by default.
There are minimal ZynqMP configurations which require
only minimal configurations to be enabled to keep u-boot size
as lower as possible.

Move options to defconfig instead.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_zynqmp_zc1751_xm019_dc5_defconfig b/configs/xilinx_zynqmp_zc1751_xm019_dc5_defconfig
index 2d55ae0..c6521e8 100644
--- a/configs/xilinx_zynqmp_zc1751_xm019_dc5_defconfig
+++ b/configs/xilinx_zynqmp_zc1751_xm019_dc5_defconfig
@@ -32,9 +32,11 @@
 CONFIG_OF_EMBED=y
 CONFIG_SPL_DM=y
 CONFIG_SPL_DM_SEQ_ALIAS=y
+CONFIG_BLK=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_CADENCE=y
 CONFIG_DM_MMC=y
+CONFIG_DM_MMC_OPS=y
 CONFIG_ZYNQ_SDHCI=y
 CONFIG_DM_ETH=y
 CONFIG_EFI_LOADER_BOUNCE_BUFFER=y