mx28evk: Convert to CONFIG_DM_SERIAL

The conversion to CONFIG_DM_SERIAL is mandatory, so select this option.

Signed-off-by: Fabio Estevam <festevam@denx.de>

arch/arm/Kconfig

@@ -919,7 +919,6 @@ config ARCH_MX28
 	bool "NXP i.MX28 family"
 	select CPU_ARM926EJS
 	select GPIO_EXTRA_HEADER
-	select PL011_SERIAL if !TARGET_XEA
 	select MACH_IMX
 	select SUPPORT_SPL
 

arch/arm/mach-imx/mxs/Kconfig

@@ -41,6 +41,7 @@ choice
 
 config TARGET_MX28EVK
 	bool "Support mx28evk"
+	select PL01X_SERIAL
 	select BOARD_EARLY_INIT_F
 
 config TARGET_XEA

configs/mx28evk_defconfig

@@ -62,6 +62,6 @@ CONFIG_DM_REGULATOR=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_RTC_MXS=y
-CONFIG_CONS_INDEX=0
+CONFIG_DM_SERIAL=y
 CONFIG_SPI=y
 CONFIG_USB=y