Add linux driver

Create the directory ledpanel inside drivers

Inside the Linux source directory drivers clone the GitHub repository on ledpanl driver:

~$ cd linux/drivers
~/linux/drivers$ git clone git://github.com/tanzilli/ledpanel.git

In driver/Makefile add below in last line

obj-$(CONFIG_LEDPANEL)   += ledpanel/

In driver/Kconfig file add below in last line

source "drivers/ledpanel/Kconfig"

Run the Kernel menuconfig and enable:

Device Drivers  --->
     RGB led panel bit banging driver (NEW) 

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