add follow to tf card config.txt

For more options and information see

http://rpf.io/configtxt

Some settings may impact device functionality. See link above for details

Set GPIO pins to 24-Bit DPI Mode 7

GPIO 0 and 1 needed for DPI Clock and Data Enable

gpio=0=a2,np
gpio=1=a2,np

Set GPIO pins 2 and 3 to I2C Mode. These can be used for other things, if needed.

gpio=2=a0,np
gpio=3=a0,np

Set up color pins

gpio=4=a2,np
gpio=5=a2,np
gpio=6=a2,np
gpio=7=a2,np
gpio=8=a2,np
gpio=9=a2,np
gpio=10=a2,np
gpio=11=a2,np
gpio=12=a2,np
gpio=13=a2,np
gpio=14=a2,np
gpio=15=a2,np
gpio=16=a2,np
gpio=17=a2,np
gpio=18=a2,np
gpio=19=a2,np
gpio=20=a2,np
gpio=21=a2,np
gpio=22=a2,np
gpio=23=a2,np
gpio=24=a2,np
gpio=25=a2,np
gpio=26=a2,np
gpio=27=a2,np

Configure DPI signal

framebuffer_width=800
framebuffer_height=480
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=503847
dpi_timings=800 0 40 48 88 480 0 13 3 32 0 0 0 60 0 32000000 6