video: atmel: implement lcd_setcolreg function

implement the common api lcd_setcolreg in include/lcd.h

Signed-off-by: Bo Shen <voice.shen@atmel.com>
[agust: fixed commit log and gcc 4.6 -Wparentheses warnings]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/include/atmel_hlcdc.h b/include/atmel_hlcdc.h
index 945b30a..fbd2f92 100644
--- a/include/atmel_hlcdc.h
+++ b/include/atmel_hlcdc.h
@@ -217,6 +217,13 @@
 #define LCDC_BASECFG3_RDEF(value) \
 	((LCDC_BASECFG3_RDEF_Msk & ((value) << LCDC_BASECFG3_RDEF_Pos)))
 
+#define LCDC_BASECLUT_BCLUT_Pos 0
+#define LCDC_BASECLUT_BCLUT_Msk (0xff << LCDC_BASECLUT_BCLUT_Pos)
+#define LCDC_BASECLUT_GCLUT_Pos 8
+#define LCDC_BASECLUT_GCLUT_Msk (0xff << LCDC_BASECLUT_GCLUT_Pos)
+#define LCDC_BASECLUT_RCLUT_Pos 16
+#define LCDC_BASECLUT_RCLUT_Msk (0xff << LCDC_BASECLUT_RCLUT_Pos)
+
 #define LCDC_BASECFG4_DMA	(0x1 << 8)
 #define LCDC_BASECFG4_REP	(0x1 << 9)