Tools:HAL_Linux_Essentials: Add PRU side of code for RCinput to run on PRU0

PRU0 with rcinpru0 firmware will be timing pin state changes and loading it inside ring buffer maintained inside SHARED_RAM at 0x12000 offset
Tools:HAL_Linux_Essentials:add rcinput test code

the test code performs continuous reads from ring buffer shared with PRU0