arm: ls102xa: Enable CONFIG_SYS_CONSOLE_IS_IN_ENV support

CONFIG_SYS_CONSOLE_IS_IN_ENV needs to be enabled, so we could set stdout
environment variable to specify the vga for the console output when
LCD/HDMI is connected to the boards.
Signed-off-by: NAlison Wang <alison.wang@nxp.com>
Reviewed-by: NYork Sun <york.sun@nxp.com>

include/configs/ls1021aqds.h

@@ -478,6 +478,7 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_VGA_AS_SINGLE_DEVICE
 #define CONFIG_VIDEO_LOGO
 #define CONFIG_VIDEO_BMP_LOGO
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
 
 #define CONFIG_FSL_DIU_CH7301
 #define CONFIG_SYS_I2C_DVI_BUS_NUM	0

include/configs/ls1021atwr.h

@@ -336,6 +336,7 @@
 #define CONFIG_VGA_AS_SINGLE_DEVICE
 #define CONFIG_VIDEO_LOGO
 #define CONFIG_VIDEO_BMP_LOGO
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
 
 #define CONFIG_FSL_DCU_SII9022A
 #define CONFIG_SYS_I2C_DVI_BUS_NUM	1