Specifies the foreground or background CLUT size. - This parameter must be a number between Min_Data = 0x00 and Max_Data = 0xFF. This parameter can be modified afterwards using unitary functions - LL_DMA2D_FGND_SetCLUTSize() for foreground layer, - LL_DMA2D_BGND_SetCLUTSize() for background layer.