Added 0x1924 = 0x6490 according to this referenced here https://www.x.org/docs/AMD/old/RRG-216M56-03oOEM.pdf as DC_LUT_PWL_DATA.
Added 0x1924 = 0x6490 according to this referenced here https://www.x.org/docs/AMD/old/RRG-216M56-03oOEM.pdf as DC_LUT_PWL_DATA.