ARM: add an "eet" variant of the imx31_phycore board

The "eet" variant of the imx31_phycore board has an OLED display, using a
s6e63d6 display controller on the first SPI interface, using GPIO57 as a
chip-select for it. With this configuration you can display 256 colour BMP
images in 16-bit RGB (RGB565) LCD mode.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/Makefile b/Makefile
index 3d0b986..e8b4c13 100644
--- a/Makefile
+++ b/Makefile
@@ -3029,8 +3029,12 @@
 imx31_litekit_config	: unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm1136 imx31_litekit NULL mx31
 
+imx31_phycore_eet_config \
 imx31_phycore_config	: unconfig
-	@$(MKCONFIG) $(@:_config=) arm arm1136 imx31_phycore NULL mx31
+	@if [ -n "$(findstring _eet_,$@)" ]; then			\
+		echo "#define CONFIG_IMX31_PHYCORE_EET" >> $(obj)include/config.h;	\
+	fi
+	@$(MKCONFIG) -a imx31_phycore arm arm1136 imx31_phycore NULL mx31
 
 mx31ads_config		: unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm1136 mx31ads freescale mx31