Convert CONFIG_LCD to Kconfig

This converts the following to Kconfig:
   CONFIG_LCD

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
diff --git a/configs/wtk_defconfig b/configs/wtk_defconfig
index 336d8e4..3e4f386 100644
--- a/configs/wtk_defconfig
+++ b/configs/wtk_defconfig
@@ -2,7 +2,7 @@
 CONFIG_8xx=y
 CONFIG_TARGET_TQM823L=y
 CONFIG_OF_BOARD_SETUP=y
-CONFIG_SYS_EXTRA_OPTIONS="LCD,SHARP_LQ065T9DR51U"
+CONFIG_SYS_EXTRA_OPTIONS="SHARP_LQ065T9DR51U"
 CONFIG_BOOTDELAY=5
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_ASKENV=y
@@ -10,4 +10,5 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_SNTP=y
 CONFIG_CMD_EXT2=y
+CONFIG_LCD=y
 CONFIG_OF_LIBFDT=y