avr32: set pin mask to alternative 18 bpp for EVKLCD10x boards

This patch will set the pin mask to alternative 18 bits per pixel output
for EVKLCD10x boards.
Signed-off-by: NHans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/boards/atngw100/evklcd10x.c

@@ -149,7 +149,8 @@ static int __init atevklcd10x_init(void)
 	at32_add_device_ac97c(0, &ac97c0_data);
 
 	at32_add_device_lcdc(0, &atevklcd10x_lcdc_data,
-			fbmem_start, fbmem_size, 1);
+			fbmem_start, fbmem_size,
+			ATMEL_LCDC_ALT_18BIT | ATMEL_LCDC_PE_DVAL);
 	return 0;
 }
 postcore_initcall(atevklcd10x_init);