arm: zynq: zybo: migrate CONFIG_DISPLAY to defconfig

Only add CONFIG_DISPLAY to defconfig because CONFIG_I2C_EDID
is automatically selected by CONFIG_DISPLAY

Signed-off-by: Luis Araneda <luaraneda@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

configs/zynq_zybo_defconfig

@@ -72,3 +72,4 @@ CONFIG_USB_GADGET_PRODUCT_NUM=0x0300
 CONFIG_CI_UDC=y
 CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_USB_FUNCTION_THOR=y
+CONFIG_DISPLAY=y

include/configs/zynq_zybo.h

@@ -12,8 +12,6 @@
 
 #define CONFIG_SYS_I2C_EEPROM_ADDR_LEN	1
 #define CONFIG_ZYNQ_GEM_EEPROM_ADDR	0x50
-#define CONFIG_DISPLAY
-#define CONFIG_I2C_EDID
 
 #include <configs/zynq-common.h>