ARM: zynq: Convert dlc20 and zc70x board to DM_I2C

All these board have also eeprom enabled that's why it is also enabled
via defconfig.
There is also no need to have zc70x specific config file that's why also
remove it.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/configs/zynq_zc702_defconfig b/configs/zynq_zc702_defconfig
index 8fd2b36..c9eb4d3 100644
--- a/configs/zynq_zc702_defconfig
+++ b/configs/zynq_zc702_defconfig
@@ -1,5 +1,4 @@
 CONFIG_ARM=y
-CONFIG_SYS_CONFIG_NAME="zynq_zc70x"
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
 CONFIG_SPL=y
@@ -18,7 +17,6 @@
 CONFIG_SPL_SPI_LOAD=y
 CONFIG_SYS_PROMPT="Zynq> "
 CONFIG_CMD_THOR_DOWNLOAD=y
-CONFIG_CMD_EEPROM=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_CMD_DFU=y
 # CONFIG_CMD_FLASH is not set
@@ -44,10 +42,14 @@
 CONFIG_FPGA_XILINX=y
 CONFIG_FPGA_ZYNQPL=y
 CONFIG_DM_GPIO=y
-CONFIG_SYS_I2C_ZYNQ=y
-CONFIG_ZYNQ_I2C0=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_CADENCE=y
 CONFIG_LED=y
 CONFIG_LED_GPIO=y
+CONFIG_MISC=y
+CONFIG_I2C_EEPROM=y
+CONFIG_SYS_I2C_EEPROM_ADDR=0x0
+CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW=0x0
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ZYNQ=y
 CONFIG_SPI_FLASH=y